题目内容
The teacher was absorbed in writing something, only _____ now and then to refer to a book or another.
A.to stop | B.stopped | C.stopping | D. having stopped |
C
解析
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题目内容
The teacher was absorbed in writing something, only _____ now and then to refer to a book or another.
A.to stop | B.stopped | C.stopping | D. having stopped |
C
解析