分类：教育/科学-外语学习
问题：英语31
1 -May I a you some questions?-Sure,______.A.come along   B.go along   C.go ahead2.-Must I finish my homework here now?-No,____.A.you don't   B.you needn't   C.mustn't3.I dialed his telephone numher,but I couldn't get____.A.through   B.past   C.on
回答：1.C  go ahead 意为“请便，您请讲”。
2.B  回答must 的问句时，肯定回答用 must，否定回答用 needn't，意为“不必”。
3.A  get through 意为“打通电话”。