1) Jack never brings flowers to his sister on her birthday.
Explanation: To make the sentence negative, we need to use the word "never" before the verb "brings" to indicate that Jack does not bring flowers to his sister on her birthday.
2) Bill never invites his friends to the birthday party.
Explanation: In order to make the sentence negative, we need to use the word "never" before the verb "invites" to indicate that Bill does not invite his friends to the birthday party.
3) Tom's uncle doesn't often visit his relatives.
Explanation: To make the sentence negative, we use the negative form of the verb "does" (doesn't) before the adverb "often" to indicate that Tom's uncle does not visit his relatives frequently.
4) Amy doesn't often write letters to her friend.
Explanation: Similar to the previous sentence, we use the negative form of the verb "does" (doesn't) before the adverb "often" to indicate that Amy does not write letters to her friend frequently.
5) Aunt Polly never sends presents to her cousin.
Explanation: Once again, we use the word "never" before the verb "sends" to indicate that Aunt Polly does not send presents to her cousin.
Fill in the following prepositions: because of, on, to, by means of, in.
1. To what building materials do the oldest ones belong?
Explanation: The preposition "to" is used to indicate the relationship between the building materials and the category they belong to.
2. Does the color of tiles depend on the color of the clay?
Explanation: The preposition "on" is used to show the relationship between the color of the tiles and the color of the clay, indicating that the color of the tiles is influenced by the color of the clay.
3. What ingredients does concrete consist of?
Explanation: The preposition "of" is used to indicate the composition of something, in this case, the ingredients that make up concrete.
4. What does the weight live load refer to?
Explanation: The preposition "to" is used to show what the weight live load refers to, indicating that it is a reference or a connection.
5. Overburnt and underburnt bricks are unpopular because of their poor strength.
Explanation: The preposition "because of" is used to explain the reason why overburnt and underburnt bricks are unpopular, indicating that their poor strength is the cause.
6. Ceramic tiles are applied by means of adhesive substances.
Explanation: The preposition "by means of" is used to indicate the method or way in which ceramic tiles are applied, specifying that adhesive substances are used.
7. Concrete, metals, and plastics belong to construction materials widely used nowadays.
Explanation: The preposition "to" is used to show the relationship between the materials and the category they belong to, indicating that they are part of the construction materials.
8. What ingredients does concrete consist of?
Explanation: The preposition "of" is used to indicate the composition of something, in this case, the ingredients that make up concrete.
9. In ancient Egypt, stone blocks were joined with bronze.
Explanation: The preposition "in" is used to indicate the timeframe or location when or where stone blocks were joined with bronze, specifying that it happened in ancient Egypt.
Explanation: To make the sentence negative, we need to use the word "never" before the verb "brings" to indicate that Jack does not bring flowers to his sister on her birthday.
2) Bill never invites his friends to the birthday party.
Explanation: In order to make the sentence negative, we need to use the word "never" before the verb "invites" to indicate that Bill does not invite his friends to the birthday party.
3) Tom's uncle doesn't often visit his relatives.
Explanation: To make the sentence negative, we use the negative form of the verb "does" (doesn't) before the adverb "often" to indicate that Tom's uncle does not visit his relatives frequently.
4) Amy doesn't often write letters to her friend.
Explanation: Similar to the previous sentence, we use the negative form of the verb "does" (doesn't) before the adverb "often" to indicate that Amy does not write letters to her friend frequently.
5) Aunt Polly never sends presents to her cousin.
Explanation: Once again, we use the word "never" before the verb "sends" to indicate that Aunt Polly does not send presents to her cousin.