（一）基础知识训练
I 1.They _____ a TV show at this time yesterday.
A. watch B. watched C. were watching D. are watching
2.The door bell rang _____ I was doing my homework. A. while B. before C. until D. after
3It snowed ____ last night. Is everyone in our class today? A. heavy B. heavily C.b ig D. small
4.What do you think of the film“Avatar”? It’s fantastic. The only pity is that I the beginning of it． A．missed B．was missing C．miss D．will miss
