Put the verbs in brackets into the correct past tense. 1) yuri (work) on his computer for two hours before it (break down). 2) i (mop) the floor while my brother was cutting the grass. 3) (you/sleep) when the earthquake (start)? 4) this time last week, i (fly) to paris. 5) sam was really happy because he (pass) all his exams. 6) sarah (clean) the house by the time her barents (come) back. 7) james (wait) for a while and then (open) the door to see who (make) that strange noise. 8) marion (not/go) shopping because she (spend) the morning with her little brother that day.

1) Yuri was working on his computer for two hours before it broke down.

2) I  was mopping the floor while my brother was cutting the grass.

3) Were you sleeping when the earthquake started?

4) This time last week, I was flying  to Paris.

5) Sam was really happy because he had passed all his exams.

6) Sarah had cleaned the house by the time  her barents came back.

7) James waited for a while and then opened the door to see who had made that strange noise.

8) Marion did not go shopping because she spent the morning with her little brother that day.

1) Yuri had been working on his computer for two hours before it broke down.

2) I was mopping the floor while my brother was cutting the grass.

3) Were you sleeping when the earthquake started?

4) This time last week, I was flying to Paris.

5) Sam was really happy because he had passed all his exams.

6) Sarah had cleaned the house by the time  her barents came back.

7) James had waited for a while and then opened the door to see who was making that strange noise.

8) Marion didn't go shopping because she spent the morning with her little brother that day.

1) Yuri worked on his computer for two hours before it broke down.
Explanation: The verb "work" is in the past tense. The past tense of the verb "break" is "broke."

2) I mopped the floor while my brother was cutting the grass.
Explanation: The verb "mop" is in the past tense. The verb "cut" is in the past continuous tense, "was cutting."

3) Were you sleeping when the earthquake started?
Explanation: The verb "sleep" is in the past tense. The verb "start" is in the past tense.

4) This time last week, I flew to Paris.
Explanation: The verb "fly" is in the past tense.

5) Sam was really happy because he passed all his exams.
Explanation: The verb "pass" is in the past tense.

6) Sarah cleaned the house by the time her parents came back.
Explanation: The verb "clean" is in the past tense. The verb "come" is in the past tense.

7) James waited for a while and then opened the door to see who made that strange noise.
Explanation: The verb "wait" is in the past tense. The verb "open" is in the past tense. The verb "make" is in the past tense.

8) Marion did not go shopping because she spent the morning with her little brother that day.
Explanation: The verb "go" is in the past tense. The verb "spend" is in the past tense. The phrase "did not" is used to form the negative past tense.