1. 用所给动词或动词词组的适当形式填空

1. （1） Ben was helping his mom make dinner when the rain began to (beat) heavily against the windows.

3. （2） When he woke up, the smoke was (rise).

5. （3） I looked out of the window and (realize) that it was true.

7. （4） He finally (fall asleep) when the wind was dying down at around 3:00 a.m.

9. （5） My alarm didn't (go off) so I got up late.

11. （6） John was taking photos when Mary (drink).