10. I meant      (call on) you,but I was so busy.

9. You can't imagine what difficulty we had      (walk) home in the snowstorm.

8. The rules of our school don't allow        (smoke) at school. That's to say,nobody is allowed        (smoke) here.

7. He finished his homework,and then he went on      (write) a letter.

6. ―What can we do to help John?

―All we can do is to try (make) him        ( realize) that he ought to study harder.

5. The teacher told the students to stop        (have) a break.

4. I'm sorry I forgot      (bring) your dictionary. Let's borrow one from Li Ming.

3. ―Since you didn't agree with him,why didn't you raise objections at the meeting?

―Well,now I regret        (do) that.

2. Tom admitted      ( break) the window and made an apology to the teacher.

1. I remember      (lock) the door before I left the office,but forgot to turn off the lights.