Exercise 1: Read these sentences and change them according to the model.
(The doctor is examining the boy (expect).
I expected the doctor had examined him. )
1. He was writing a letter to his girl-friend. (to be sure).
Exercise 2 Ask questions
1.My research adviser has found the second chapter of my dissertation too long. (why).
2. The workers of this factory have decided to produce more machines of this kind. (what).
3. The examiner has found the conclusion quite correct. (what).
4. They have not yet answered my request. (why).
5. Our group has determined to agree to their plan. (why).
6. The scientists have just changed the order of the whole process. (how).

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