Copy the sentences putting in the verbs in the Past indefinite or the Past Perfect tense: 1) I .. not .. the man, I never ... him before (to know,to see)
2) Tom wasn't at home when I ... . He ... just ... out (to come,to go)
3) We ... at the theatre late , the play ... already ... (to arrive,to begin)
4) I ... very pleased to see my sister again after such a long time. I .. not .. her for five years. (to be, to see)
5) By 6 o'clock they ... back from the match (to come)
6) Why ... you not .. me on Tuesday? (to phone)

1) I did not know the man, I had never seen him before.
Explanation: The sentence is talking about a past event when the speaker did not know the man. The actions of not knowing and not seeing happened in the past, so we use the Past Indefinite tense for "did not know" and "had never seen."

2) Tom wasn't at home when I came. He had just gone out.
Explanation: The sentence is talking about the past when the speaker went to Tom's home. However, Tom was not there because he had already left before the speaker arrived. Therefore, we use the Past Indefinite tense for "wasn't" and the Past Perfect tense for "had just gone."

3) We arrived at the theatre late, the play had already begun.
Explanation: The sentence is talking about the past when "we" arrived at the theatre. However, the play had already started before "we" arrived. Therefore, we use the Past Indefinite tense for "arrived" and the Past Perfect tense for "had already begun."

4) I was very pleased to see my sister again after such a long time. I hadn't seen her for five years.
Explanation: The sentence is talking about a past event when the speaker saw their sister. The feeling of being pleased happened in the past, so we use the Past Indefinite tense for "was" and the action of not seeing the sister for five years happened before the past event, so we use the Past Perfect tense for "hadn't seen."

5) By 6 o'clock, they had come back from the match.
Explanation: The sentence is talking about a past event when "they" came back from the match. The action of coming back happened before 6 o'clock, so we use the Past Perfect tense for "had come."

6) Why didn't you phone me on Tuesday?
Explanation: The sentence is talking about a past event when the speaker did not receive a phone call on Tuesday. The action of not phoning happened in the past, so we use the Past Indefinite tense for "didn't phone."