一、答案
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| C | B | C | B | A | D | B |
二、答案
1. strange
2. suddenly
3. rainstorm
4. alarm
5. missed
三、答案
1. were; doing
2. so; that
3. go off
4. pick up
5. at that time
四 、答案
(1) were
(2) pick
(3) watching
(4) when
(5) strange
(6) with