. There is such an occasion ___________ we know lots of words, but we can’t choo

题干

. There is such an occasion ___________ we know lots of words, but we can’t choose a suitable one to express ourselves.

A．where

B．when

C．which

D．what

上一题下一题 0.85难度单项选择更新时间:2010-06-06 09:43:05

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