单项选择题

______ a satisfactory answer, so he had to write to them again.

A. As he hadn't received
B. Not having received
C. Having not received
D. He hadn't received
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单项选择题
Both teams were in hard training; ______ was willing to lose the game.
A. either
B. neither
C. another
D. the other
单项选择题
Do ______ you think is right ______ difficulties you may have.
A. what…however
B. that…what
C. whatever…whoever
D. what…whatever
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