非谓语动词

1. I had the washing machine (a)   (repair) yesterday.

2. When we arrived at the laboratory, we saw the teacher (a)   (do) the experiment.

3. The old couple often take a walk after supper in the park with their pet dog (a)   (follow) them.

4. Not (a)   (know) his address, I can’t write to him.

5. Football is played all over the world, (a)   (make) it a popular sport.

6. The dog, (a)   (train) properly, will be made a good watchdog.

7. It’s no good (a)   (wait) here. Let’s go home.

8. I failed (a)   (finish) my work on time.

9. I remained (a)   (puzzle) long after I had been told the story.

10. He was seen (a)   (enter) the tall building.