非谓语动词

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

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

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

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

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

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

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

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

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

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