The young man told me a convincing story, but it seemed that he concealed his true motives.
A．put up
B．took up
C．picked up
D．covered up

A.
A．put
B.took
C.picked
D.covered

【参考答案】

D
该句意为：这个小伙子讲了一个令人信服的故事，但他似乎隐瞒了自己真正的动机。conceal：掩饰，掩盖；put......

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