When I passed the entrance examination, my family_____ me ______ my success.
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It was believed that things would get worse, but ____ it is they are getting better.
| A．before | B．after | C．because | D．as |
I ____ to go for a walk, but someone called and I couldn’t get away.
| A．was planning | B．planned | C．had planned | D．would plan |
—The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?
—____ my students have a try?
| A．Shall | B．Must | C．Will | D．May |
He is only too ready to help others, seldom, ____, refusing them when they turn to him.
| A．if never | B．if ever | C．if not | D．if any |
—Look, it ____ again.
—Yeah. This is the third snow we ____ this spring.
| A．will snow; are having | B．has snowed; had had |
| C．is snowing; have had | D．snows; have had |