100 нужно iv. instead of the modal verbs use the equivalents in the proper tense: the doctor must determine the origin of the disease for its successful treatment. 2. the doctor could reveal the consolidation in the lung by the x-ray examination. 3. the scientist can observe a rapid growth of microorganisms under the microscope. 4. the doctor says that this patient may sit up.

1 The doctor is to/ has to determine the origin of the disease for its successful treatment.

2. The doctor was able to reveal the consolidation in the lung by the X-ray examination.

3. The scientist is able to observe a rapid growth of microorganisms under the microscope.

4. The doctor says that this patient is allowed/ is permitted to sit up.

1 Alex said that he had studied music for five years.
2 She said she knew the answer.
3 Sandra said that she felt ill.
4 The police officer asked me what my name was.
5 Ryan said he had bought the tickets.
6 She asked if I had spoken French.
7 Will said that they could help him.
8 Sara asked if he had finished.
9 They asked me to come back later.
10 She said that she had been to Shanghai.
11 She told me not to speak in the library.
12 Mark said that he was going into town.
13 The weather forecast said it would rain on Tuesday.
14 She asked me where my sister was.
15 He told her that he loved her.
16 The teacher asked Amy if she was over eighteen.
17.если Past Simple в прямой речи-Past Perfect в косвенной
Если Present Simple в прямой-Past Simple в косвенной -некорректно задан вопрос или не хватает вариантов ответа

1. Alex said that he studied music for five years.
2. She said she knew the answer.
3. Sandra said that she felt ill.
4. The police officer asked me what my name was.
5. Ryan said he had bought the tickets.
6. She asked if I spoke French.
7. Will said that they could help him/her.
8. Sara asked if he had finished.
9 They asked me to come back later.
10. She said that she had been to Shanghai.
11 She told me not to speak in the library.
12 Mark said  that he was going into town.'
13The weather forecast said  it would rain on Tuesday.
14 She asked me where my sister was.
15 He said to her that he loved her.
16 The teacher asked Amy if she was over eighteen.
17.Past Simple - ответ 2.