问题
选择题
— They look worried. What's wrong with them?
— It seems that they something important. [ ]
A．have lost
B．lost
C．had lost
D．lose
答案
答案：A
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— They look worried. What's wrong with them?
— It seems that they something important. [ ]
A．have lost
B．lost
C．had lost
D．lose
答案：A
