Question

1)Complete the sentences by using an Infinitive or an -ing form. He heard the phone ...ringing... but it stopped before he could answer it. When I entered his room I saw him ........................ his homework. Then I saw him ........................ the house,........................ into his car and .......................... away. As they were walking past the house, they saw it........................ into flames. I saw Gary Lineker........................ the winning goal in the FA Cup Final.

Answer 1

He heard the phone ...ringing... but it stopped before he could answer it.
When I entered his room I saw him doing his homework.
Then I saw him leave the house, get into his car and drive away.
As they were walking past the house, they saw it burst into flames.
I saw Gary Lineker hit the winning goal in the FA Cup Final.

Answer 2

Infinitive or -ing Form

1. He heard the phone ringing but it stopped before he could answer it. 2. When I entered his room, I saw him doing his homework. 3. Then I saw him leaving the house, getting into his car, and driving away. 4. As they were walking past the house, they saw it bursting into flames. 5. I saw Gary Lineker scoring the winning goal in the FA Cup Final.

The sentences can be completed using either the infinitive form or the -ing form of the verbs. In this case, the -ing form is used to describe actions that were in progress or ongoing at the time of observation. The infinitive form is used to describe actions that were completed or intended to be done.

[[1]](https://fsc.bsu.by/wp-content/uploads/2015/12/Prakticheskaya-grammatika-1-kurs-English-Grammar-Practice-uchebno-metodicheskoe-posobie.pdf)