-Has Tommy finished his homework yet??
-I have no idea; he ____ it this morning.
A. was doing B. had been doing C. has done D. did
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科目：高中英語 來源： 題型：
-Has Tommy finished his homework yet??
-I have no idea； he ____ it this morning.
A. was doing B. had been doing C. has done D. did
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科目：高中英語 來源： 題型：
----Has Tommy finished his homework yet??
----I have no idea; he ____ it this morning.
A. was doing B. had been doing
C. has done D. did
查看答案和解析>>
科目：高中英語 來源： 題型：
-Has Tommy finished his homework yet??-I have no idea; he ____ it this morning.
A. was doing B. had been doing
C. has done D. did
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科目：高中英語 來源： 題型：
-Has Tommy finished his homework yet??-I have no idea; he ____ it this morning.
A. was doing B. had been doingC. has done D. did
查看答案和解析>>
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