He had gone away on business and would notreturn to the hotel until the next day—should have to wait till_________I couldthank him for the present．
A. afterwards
B. then before
C. then
D. then therefore
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下列函数中，函数值恒大于零的是（） (A)y=x2 (B)y=2x (C)y=㏒2x (D)y=cosx
A.is in a bad moodB.has the bad temperC.has the bad humourD.has lost his mood
A. is in a bad mood
B. has the bad temper
C. has the bad humour
D. has lost his mood
阅读文章，回答下列各题： We spend our leisure hours efficiently for higher production，live
A. how to make the best useof leisure time
B. planning our timescientifically
C. the modern pace
D. our interest in shortenedoperas
答案为：
A. has undergone
B. undergoes
C. underwent
D. had undergon
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