B.It's an
因为“A”是元音发音/ei/,前面需要冠词an,所以A不对,D同理.
对于What's this 的回答,既可以用it's也可以用this is回答
选择 What's this - ( )"A" A.It's B.It's an C.It's a D.This is
1个回答
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