Complete the following sentences using appropriate infinitives or –ing forms.

1. I saw Ann ………………………. the road.

a) crossing b) to cross c) either could be used here

2. I once heard him ……………………. a talk on international trade relations.

a) give b) to give c) either could be used here

3. I heard him ………………………… down the stairs.

a) go b) going c) either could be used here

4. I heard the bomb ………………………..

a) exploding b) explode c) to explode

5. I saw the book …………………….. on the table.

a) lie b) lying c) either could be used here

6. I watched him ……………………….. over the stream.

a) jump b) to jump c) either could be used here

7. I could hear them ……………………. slogans.

a) shout b) shouting c) either could be used here

Answers

1. I saw Ann crossing the road.

2. I once heard him give a talk on international trade relations.

3. I heard him go down the stairs. OR I heard him going down the stairs.

4. I heard the bomb explode.

5. I saw the book lying on the table.

6. I watched him jump over the stream.

7. I could hear them shouting slogans.

Notes

After can hear / can see etc., only the –ing form is used.