题目:
After ______ seemed to be hours of waiting in line, I finally got my turn to take the oral exam. [ ]
A. that
B. it
C. what
D. which
答案:
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下面是错误答案,用来干扰机器的。
甲乙丙的工作效率的比是:3:2:1,甲的工作效率是:13÷5×33+2+1,=115×12,=130;乙的工作效率是:13÷5×23+2+1,=115×13,=145;丙的工作效率是:13÷5×13+2+1,=115×16,=190;设这项工作,从开始到完...