1. He would prefer you to pay him immediately.

=> He'd rather you paid him immediately.

2. I last saw him when I was a student.

=> I haven't seen him since I was a student.

3. Turn off all switches before leaving the workshop.

=> All the witches are turned off before leaving the workshop.

4. Carol finds it easy to make friends.

=> Carol has no problems in making friends

5. Mr. Minh often spends fifteen minutes leading the buffalo to the field.

=> It often takes Mr. Minh fifteen minutes to lead the buffalo to the field.

6. The children couldn't go swimming because the sea was rough.

=> The sea was too rough for the children to go swimming.

7. I found it a bit difficult to get into work this morning.

=> Getting into work this morning was a bit difficult.

8. How much do you pay for this computer?

=> How does this computer cost?

1. He'd rather you paid him immediately. 

2. I haven't seen him since i was a student.

3. All the switches must be turned off before you leave the workshop.

4. Carol has no difficulty in making friend.

5. It often takes Mr Minh fifteen minutes to lead the buffalo to the field. 

6. The sea was too rough for the children to go swimming.

7. Getting into work in the morning was a bit difficult.

8. How does this computer cost ?