题目内容
(请给出正确答案)
[单选题]
We'll visit Europe next year ____________we have enough money.A.providedB.unlessC.un
A.provided
B.unless
C.until
D.lest
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A.provided
B.unless
C.until
D.lest
第3题
I was sure __________ I would overcome all these difficulties.
A.what
B.that
C.which
D.whether
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