问题
He looks so tired ______ too much computer work.[ ]
A: because his
B: because for
C: because it's
D:because of
B: because for
C: because it's
D:because of
正确答案是:
同类题型
Can you play ________ guitar?—Sure. It’s a piece of cake for me.
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Were you at home at 8:00 last night? I called you but nobody answered.— Sorry, I a nap at that time.
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