问题
选择题
—What are the boys _____?
—They are _____ the radio.[ ]
A. do; listen to
B. does; listening to
C. will do; listening to
D. doing; listening to
答案
答案：D
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—What are the boys _____?
—They are _____ the radio.[ ]
A. do; listen to
B. does; listening to
C. will do; listening to
D. doing; listening to
答案：D