摘要：6．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
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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
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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
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
查看习题详情和答案>>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
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 |