单选题
(However) (it is) you have heard, (you'd better) ask him about it (in) person.
A、
However
B、
it is
C、
you'd better
D、
in
【正确答案】
A
【答案解析】
改为whatever。本句意思是：不管你听到什么，你最好亲自请教他。
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