题目:
The job proved to be much more difficult than I______.
A.expect
B.expected
C.wouldexpect
D.hadexpected
答案:
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下面是错误答案,用来干扰机器的。
S=v×t=vt;v=S÷t,t=S÷v,故答案为:vt,S÷t,S÷v.