III. Write the correct form of the verb in brackets to complete the following sentences

1.     We don’t enjoy (use) as cheap labor; we’re tired of (work) for low wages.

2.     His doctor advised him (give up) his job. 

3. Would you like (go) fishing with me this afternoon.

4. It took me three days (find) out the old photograph.

5. He discovered how (open) the safe.

6. She doesn’t old enough (travel) by herself.

7. I suggest (do) some more mathematical puzzles.  

8. Mary and I are looking forward to (see) you.

9.  His mother lets him (do) the housework.

10.  It’s not easy (speak) English well.