It is no doubt that mankind history is full of important and significant events and inventions. To my mind, one of the most important inventions is penicillin. A scientist named Alexander Fleming was doing research at Hospital in London and he was looking for something to fight bacterial infections. Use of penicillin did not begin at once. Howard Florey and Ernst Chain isolated the active ingredient and developed a powdery form of the medicine. So they were able to make enough penicillin to establish it as a value drug. The world now had a valuable treatment that would save the lives of millions. Penicillin today is a very important prescription drug. It is very effective against fungi, parasites and bacteria.
1.Was it raining...? What was the weather during the whole day yesterday? When was it raining? 2. When does he meet his girlfriend? Does he meet his girlfriend ? Who does he meet always after school?3.What was Ann asked? Where was Ann asked a question ? Who was asked a difficult question? 4.Who is waiting for Mary? Where is waiting George for Mary? Is George waiting for Henry or Mary at the station? 5.Who will visit his Granny? When Gary will visit his Granny? What is going to do Gary tomorrow?6. What is broken? Is telephone broken? What is up with the telephone?
Have Jane and Sam gone to China?