单项选择，从A、B、C中选出最佳的答案。
1）Where _____ your hometown?
A. is B. was C. are
2）Many people think that beer _____ better than alcohol(酒、白酒).
A. is B. was C. are
3）— Can you answer my question, Lily?
— Yes, I _____.
A. can B. need C. must
4）— Who is the man over there? Is it Mr. Li?
— No, it _____ be him. Mr. Li is much taller.
A. mustn't B. may not C. can't