"Can I borrow your bike, please?"
The correct option to fill in the gap is "d) can".
Explanation:
The word "borrow" indicates that the person is asking for permission to use someone else's bike temporarily. In this case, "can" is the most appropriate option to use because it is the word that expresses ability or permission.
Step-by-step solution:
1. Read the sentence carefully to understand what is being asked.
2. Identify the missing word and the context in which it is used. In this case, the missing word is the verb that expresses the ability or permission to borrow someone's bike.
3. Look at the options provided: a) have, b) will, c) ought, and d) can.
4. Evaluate each option and eliminate the ones that do not convey the required meaning. In this case, options a) (have) and b) (will) do not fit because they do not express permission or ability. Option c) (ought) also does not fit because it expresses obligation rather than permission.
5. Choose the most appropriate option based on the context and meaning of the sentence. In this case, option d) (can) fits because it expresses the ability or permission to borrow the bike.
6. Fill in the missing word in the sentence. The correct completion of the sentence is: "Can I borrow your bike, please?"
It's important to note that it is always best to read the entire sentence and consider the context before choosing the correct option. Additionally, practicing grammar exercises and reading can help improve your understanding of sentence structures and word usage.
1. Cashiers often make mistakes doing a lot of calculations every day.
Explanation: The verb "make" is used in the present simple tense because it refers to a habitual action that cashiers often do.
2. Punched cards were used by J. M. Jacquard to program his loom.
Explanation: The verb "use" is changed to the past simple tense ("used") because it refers to a past action that J. M. Jacquard did.
3. People have greatly changed computers lately.
Explanation: The verb "change" is used in the present perfect tense ("have changed") to show an action that started in the past and is still relevant to the present.
4. During the experiment, the machine broke down and had to be repaired.
Explanation: The verb "break" is changed to the past simple tense ("broke") because it refers to a past action. The verb "must repair" is changed to the past simple passive voice ("had to be repaired") to show that it was necessary to fix the machine.
5. Our programmer wrote programs for the computer all day long yesterday.
Explanation: The verb "write" is used in the past simple tense because it refers to a specific action that our programmer did yesterday.
6. He finished his work before 7 o'clock.
Explanation: The verb "finish" is used in the past simple tense because it refers to a completed action in the past.
7. When the lesson was over, we switched the computer off.
Explanation: The verbs "be" and "switch" are changed to the past simple tense ("was" and "switched") because they refer to actions that happened in the past.
8. What idea did Charles Babbage have? He designed a fully programmable mechanical computer.
Explanation: The verbs "have" and "design" are changed to the past simple tense ("did have" and "designed") because they refer to actions that happened in the past.
9. We have been using computers for three hours to solve those mathematical problems.
Explanation: The verb "use" is changed to the present perfect continuous tense ("have been using") to show an action that started in the past and is ongoing until now.
10. The problems were not solved before the necessary algorithms were input into the computer.
Explanation: The verb "solve" is changed to the past simple passive voice ("were not solved") to show that the problems were not completed. The verb "input" is changed to the past simple tense ("were input") because it refers to a past action.
ответ: 6 см
Объяснение:
Выразим фокусное расстояние:
=>
Подставляем:
F=1/17,6=0.0568 метров=5,88см=6см (округляем до целых)