题目内容：
Don't promise anything_______you are 100 percent sure.
[ ]
A. since B. after
C. if
D. unless
参考答案：
单选题：Don't promise anything_______you are 100 percent sure. [ ]..
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B. after
C. if
D. unless
B. after
C. if
D. unless
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"What you can't imagine is how terrible life will be______..
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_____ her bag, but also ______ in the leg. [ ]A. Did Betty..
_____ her bag, but also ______ in the leg. [ ]A. Did Betty not only lose; did get wounded B. Did Betty not only lose; got wounded C. Betty not only lost; got wounded D. Not only Betty lost; did get wounded
______ every year, many people do not hold a high opinion of..
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