问题
.Our success depends ______ everyone works hard or not
A:upon whether
B:on that
C:in which
D:on why
B:on that
C:in which
D:on why
正确答案是：
同类题型
Only when __________ senior high school __________ to show a great interest in poems.
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ew away all the ______ cigarettes, _______to give up smoking for the sake of his health
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