问题描述：
1—―five minutes ___before the last bus left,we arrived at the station ;A.There wereto go B.With;to go C.It was;left D.It had;left2_ an important meeting tomorrow ,I have to prepare for it A there is B There will beC there being D There to be3_______a fine day ,we decided to go out on a picnic A having been Bwhat Cbeing Dit being 4
问题解答：
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