3. They played football yesterday. (用at this time yesterday改写句子) 

They           football at this time yesterday.

2. Tom saw a cat in the tree while he was taking photos in the park. (改为同义句) 

Tom was Taking photos in the park           saw a cat in the tree.

1. They were doing housework at that time yesterday. (对画线部分提问)

      they           at that time yesterday?

5. They       (mend) TV at ten last night.

4. We      (build) a new house at that time.

3. —Why did the policeman stop your car.?

-Because I        (make) a call at that moment. What a bad day！

2. When I got home yesterday afternoon,it       (rain) hard.

1. Mr Wang with his daughter      ( have) breakfast when someone knocked at the door.

(   ) 6. They      a tiger when the teacher came in.

   A. are drawing   B. drawing

   C. were drawing   D. drew

(   ) 5. Nobody noticed what the young man      at that moment.

   A. will do   B. was doing

   C. has done   D. had done