12.He is the last one ________ (leave) the office every day.

11.If he doesn’t know, how ________ (use) the recorder, you’d better ________ (show) him.

10.Will you help me ________ (move) the bed?

9.I let him ________ (go) early as he wanted ________ (meet) his uncle at the station.

8.It is difficult for the boy ________ (swim) across the river.

7.It is better ________ (put) your money in a bank.

6.Did you see him ________ (go) upstairs?

5.What makes you ________ (think) I’m a farmer?

4.I don’t know where ________ (meet) him.

3.You can’t make him ________ (do) what you want.