Complete the sentences using the right form of the given verbs
1 I was sick and skipped a bunch of classes last week. It's hard to keep up with my classmates now because they/learn a lot.
2 My dad was lying on the sofa and watching TV. There were lots of dirty cups and plates nearby.He / eat in the living room.
3 When I came, everybody was staring at me. They looked angry. They / wait
for me for two hours.
4 I have / a shower when somebody rang the doorbell.
5 Before it started to rain, it / be such nice weather for the whole week.
6 I was extremely sad when my parents decided to move to another flat. We / live
there for a very long time.
7 We were completely exhausted at the end of the school year. We / have more than 15 exams and 25 projects in total.

1. It's hard to keep up with my classmates now because they were learning a lot.
Explanation: The speaker says "I was sick and skipped a bunch of classes last week," which implies that the actions of their classmates occurred in the past. Therefore, we use the past continuous tense ("were learning") to indicate an ongoing action in the past.

2. My dad was lying on the sofa and watching TV. There were lots of dirty cups and plates nearby. He was eating in the living room.
Explanation: The speaker describes a continuous action in the past ("lying on the sofa and watching TV") and the presence of dirty cups and plates nearby. Therefore, we use the past continuous tense ("was eating") to indicate that the action of eating was happening at that time.

3. When I came, everybody was staring at me. They looked angry. They had been waiting for me for two hours.
Explanation: The speaker arrived at a specific point in the past ("When I came"), and the action of everybody staring at them was happening continuously. Therefore, we use the past continuous tense ("were staring") to indicate an ongoing action in the past. Additionally, the speaker states that "they had been waiting for me for two hours," which implies a duration of time before the past moment. Therefore, we use the past perfect continuous tense ("had been waiting") to indicate the continuous action that started before a certain point in the past and continued up to that point.

4. I was having a shower when somebody rang the doorbell.
Explanation: The speaker states that they were in the middle of the action of having a shower when somebody rang the doorbell. Therefore, we use the past continuous tense ("was having") to indicate an ongoing action in the past.

5. Before it started to rain, it had been such nice weather for the whole week.
Explanation: The speaker refers to a past moment ("Before it started to rain") and describes the weather during a specific period ("for the whole week"). Therefore, we use the past perfect continuous tense ("had been") to indicate a continuous action that started before a certain point in the past and continued up to that point.

6. I was extremely sad when my parents decided to move to another flat. We had been living there for a very long time.
Explanation: The speaker describes their emotional state in the past ("I was extremely sad") and the action of living in a certain flat for a duration ("We had been living there for a very long time"). Therefore, we use the past continuous tense ("was living") to indicate an ongoing action in the past, and the past perfect continuous tense ("had been living") to indicate the continuous action that started before a certain point in the past and continued up to that point.

7. We were completely exhausted at the end of the school year. We had had more than 15 exams and 25 projects in total.
Explanation: The speaker describes their state at the end of the school year ("We were completely exhausted") and the quantity of exams and projects they had completed ("more than 15 exams and 25 projects in total"). Therefore, we use the past continuous tense ("were having") to indicate an ongoing action in the past, and the past perfect tense ("had had") to indicate the completion of exams and projects before a certain point in the past.