问题
选择题
The telephone ______continually in the office all morning. Why doesn't someone answer it? [ ]
A. phones
B. has phoned
C. has been phoning
D. phoned
答案
答案：C
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The telephone ______continually in the office all morning. Why doesn't someone answer it? [ ]
A. phones
B. has phoned
C. has been phoning
D. phoned
答案：C