II. Fill in the gaps with Past Simple, Past Perfect or Past Perfect Continuous. 1. They (live) in London for ten years before they (move) to Paris. 2. Pam (go) out with her friends after she (finish) her homework. 3. How long (you, wait) before the bus (arrive)? 4. The teacher (ask) us the poem which we (not learn) by heart. 5. David (eat) his lunch by the time we (get) home.

1. They had lived in London for ten years before they moved to Paris.
Explanation: We use the Past Perfect tense to talk about an action that happened before another past action. In this sentence, the action of living in London for ten years (past perfect) happened before the action of moving to Paris (simple past).

2. Pam went out with her friends after she had finished her homework.
Explanation: We use the Past Perfect tense to talk about an action completed before another past action. In this sentence, the action of finishing her homework (past perfect) happened before the action of going out with her friends (simple past).

3. How long had you been waiting before the bus arrived?
Explanation: We use the Past Perfect Continuous tense to talk about the duration of an action before another past action. In this sentence, the action of waiting (past perfect continuous) happened before the action of the bus arriving (simple past).

4. The teacher asked us the poem which we had not learned by heart.
Explanation: We use the Past Perfect tense to talk about an action that was not completed before another past action. In this sentence, the action of not learning the poem by heart (past perfect) happened before the action of the teacher asking (simple past).

5. David had eaten his lunch by the time we got home.
Explanation: We use the Past Perfect tense to talk about an action completed before another past action. In this sentence, the action of eating his lunch (past perfect) happened before the action of us getting home (simple past).