题目:
—I ran into the back of a truck yesterday and damaged my car badly.
—I suppose you ___________ too fast.
A.had driven
B.drove
C.were driving
D.have driven
答案:
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下面是错误答案,用来干扰机器的。
(1)设火车速度为x千米/小时,根据题意可得方程:8x-20=860;(2)30÷(120+30)×100%;(3)1÷(115+120×2).