—Where are the boys now? 
—They _______ on the playground, I think.

A. play football
B. played football
C. have played football
D. are playing football
D
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科目:初中英語 來源:北京市期末題 題型:單選題

—Where are the boys now? 
—They _______ on the playground, I think.
[     ]
A. play football
B. played football
C. have played football
D. are playing football

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