The problem is he can reach the target he has set before the competition.A.ifB.w
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The problem is ________ he can reach the target he has set before the competition.
A.if
B.whether
C./
D.that
试题答案
B

The problem is ________ he can reach the target he has set before the competition.
A.if
B.whether
C./
D.that
B