相关考题
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单项选择题
Look at Tom! What（）?
A.does he do
B.is he doing
C.he is doing -
单项选择题
Does he（）on weekends
A.usually works
B.works usually
C.usually working -
单项选择题
There aren't（）books in my bag.
A.no
B.some
C.any
