Answer:
1)My sister bought him a dog for his birthday last week.
2)Marceau and Yanis went to the cinema last Monday.
3)Brunella sat behind the door when we were looking for her.
4)Annelore broke her umbrella yesterday.
5)They said they were tired and went upstairs to sleep.
6)Johanne lost her keys on the pavement .
7)Cécile rode a horse when she went to the circus.
8)The Scottish people built their detached house near the beach years ago.
9)Jean saw many boats over the see, when she was on holiday.
10)I read Romeo and Juliet when I was 10 years old.
11)The boys were playing games when it started raining.
12)You were watching TV when I prepared for my exam.
13)The phone rang while I was cooking dinner.
14)How long have you been a social activist?
15)We knew each other for a long time.
16)We learned nothing from all the wars in history.
17)I prepared well for the exam.
18)I prepared well for the exam, yet I failed.
19)The teacher asked an interesting question in the class yesterday.
20)I looked around but I couldn't find anyone.
21)She threw a glass at me, but missed.
22)If you don’t hurry, you will miss the train.