问题
选择题
-_____ I swim in that river?
-No, you _____. It's dangerous to swim in it. [ ]
A. Must; can't
B. Can; may
C. Must; needn't
D. May; mustn't
答案
答案:D
-_____ I swim in that river?
-No, you _____. It's dangerous to swim in it. [ ]
A. Must; can't
B. Can; may
C. Must; needn't
D. May; mustn't
答案:D