题目内容
-I'm afraid that I can't do it.
-Oh, you should believe in yourself.You won't know what you can do ________ you try it.
[ ]
A.if
B.because
C.until
D.while
答案:C
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题目内容
-I'm afraid that I can't do it.
-Oh, you should believe in yourself.You won't know what you can do ________ you try it.
A.if
B.because
C.until
D.while