2 Complete the second sentence so that it means the same as the first. Use no more than five words including the word in capitals. Do not change the word given. 1 The chemist developed a theory at the same time she analysed the data. WHILE the data, she developed a theory. 2 We finished the biology class and then immediately went home. SOON We we finished the biology class. 3 I collected the evidence and then started writing this report. AFTER I started writing this report the evidence. 4 I became an optician last year, in December. UNTIL I didn't December last year. 5 When David was doing the experiment, he discovered something interesting. DURING David _ the experiment 6 He washed his hands and then he prepared lunch. BEFORE he washed his hands. 7 Everyone was in the classroom when I arrived. BY everyone was in the classroom. 8 Lisa began to panic when she saw the Maths test ,she began to panic.

1 WHILE analysing the data, she developed a theory.
Explanation: The word "while" means "at the same time as". So, the sentence means that she developed a theory at the same time as she was analysing the data.

2 SOON we finished the biology class.
Explanation: The word "soon" means "immediately". So, the sentence means that we went home immediately after finishing the biology class.

3 AFTER the evidence, I started writing this report.
Explanation: The word "after" means "following in time". So, the sentence means that I started writing this report following the collection of evidence.

4 UNTIL December last year, I didn't become an optician.
Explanation: The word "until" means "up to the time of". So, the sentence means that I didn't become an optician up to the time of December last year.

5 DURING the experiment, David discovered something interesting.
Explanation: The word "during" means "throughout the time of". So, the sentence means that David discovered something interesting throughout the time of the experiment.

6 BEFORE preparing lunch, he washed his hands.
Explanation: The word "before" means "prior to". So, the sentence means that he washed his hands prior to preparing lunch.

7 BY the time I arrived, everyone was in the classroom.
Explanation: The word "by" means "not later than". So, the sentence means that everyone was in the classroom not later than the time I arrived.

8 Lisa began to panic when she saw the Maths test.
Explanation: The sentence is already complete and doesn't need to be rewritten.