Дополнить предложения, используя Past Simple, Past Continuous, Past Perfect or Present Perfect:1. She (to tell) us that she (to cook) a good dinner.2. The boy (to be) glad that he (to find) a good seat.3. While my friend (to read), I (to watch) the film.4. He was late. By the time he … (to get) to the cinema, the movie … (to start) already.

1. She told us that she had cooked a good dinner.

Explanation: In this sentence, we use "past simple" (told) to indicate the action of telling in the past. The second part of the sentence requires the use of "past perfect" (had cooked) because it refers to an action that happened before the action in the past. The person had cooked the dinner before telling the others.

2. The boy was glad that he had found a good seat.

Explanation: Here, we use "past simple" (was glad) to indicate the feeling in the past. The second part of the sentence requires the use of "past perfect" (had found) because it refers to an action that happened before the feeling in the past. The boy found the good seat before feeling glad about it.

3. While my friend was reading, I was watching the film.

Explanation: In this sentence, we use "past continuous" (was reading, was watching) to indicate ongoing actions in the past. The two actions were happening at the same time but were not necessarily completed.

4. He was late. By the time he got to the cinema, the movie had already started.

Explanation: In this sentence, we use "past simple" (was late, got) to indicate the actions in the past. The second part of the sentence requires the use of "past perfect" (had started) because it refers to an action that happened before another action in the past. The movie had already started when he arrived at the cinema.