摘要：What are you doing? A.on earth B.in earth C.in the earth D.on the earth 答案:A on earth究竟.
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—What _____ are you doing ?
—I'm looking for my book.
—I'm looking for my book.
[ ]
A. so far
B. all year
C. on earth
D. in the future
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B. all year
C. on earth
D. in the future
— What _______ are you doing?
— I’m looking for my book.
A. so far B. all year C. on earth D. in the future
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