He seems ____ something valuable. He looks so worried.A．has lostB．to loseC．to be_刷题宝

题干

He seems ____ something valuable. He looks so worried.

A．has lost

B．to lose

C．to be losing

D．to have lost

上一题下一题 0.85难度单项选择更新时间:2010-06-11 06:57:43

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