PHƯƠNG PHÁP GIẢI:

S + V + O   --->   S + to be + V2.

ĐÁP ÁN:

1. It is thought that he told lies to them. 

He is thought that he told lies to them. 

2. It is believed that Kate lost her mobile phone.

Kate is believed to have lost her mobile phone.

3. It is said that she is very ill.

She was said to be very ill.

4. It was said that the president died last night.

The president was said to be died last night.

5. It is believed that she took drugs.

She is believed to have taken drugs. 

6. It is expected that he will pass his driving test.

He is expected to pass his driving test.

7. It is said that she was wrongly accused.

She is said to have wrongly accused.

8. It is believed that he left for Paris.

He is believed to have left for Paris.

9. It is said that his health improves quickly.

He is said that his health improves quickly.

10. It was reported that some documents are stolen.

Some documents was reported to have been stoten.