I am told to guess the meaning of an unknown word but my question is I still can’t unde

问题补充：

I am told to guess the meaning of an unknown word, but my question is I still can’t

understand its meaning.

A. that if

B. whether why

C. how if

D. what if

答案：

A. that if

B. whether why

C. how if

(答案→)D. what if

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