| A．a; a | B．a; the | C．the; a | D．the; the |
--- I’m sorry I broke the vase.
--- Oh, _____. It wasn’t very expensive.
| A．you’d better not | B．I’m afraid not |
| C．as you wish | D．that’s all right |
It rained heavily in the south，________ serious flooding in several provinces.
| A．caused | B．having caused | C．causing | D．to cause |
Bring the plants into a warm room _____ they will soon open.
| A．or | B．and | C．but | D．for |
When I got home, I _____ I had left my wallet in the taxi
| A．was realizing | B．realized | C．have realized | D．would realize |
The two men are so alike that strangers find _____ difficult to tell one from the other.
| A．it | B．them | C．her | D．that |