问题
选择题
Don’t disturb Tony, for he ________ all night and has just fallen asleep.
A．has been working
B．is working
C．has worked
D．works
答案
答案：A
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Don’t disturb Tony, for he ________ all night and has just fallen asleep.
A．has been working
B．is working
C．has worked
D．works
答案：A