单选题
--Shall I buy this toy for little Charlie?
-- ______ . He might already have it.
A、
You should
B、
You'd better not
C、
No problem
D、
You can't do that
【正确答案】
B
【答案解析】
[名师精解] 从语气和逻辑上讲，选项B最合适。选项A和C与后半句矛盾；选项D语气太强烈，不符合这种场合。
[解题秘籍] had better的否定形式是had better not do sth．
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