摘要： When class began, we stopped to the teacher carefully . A. listening B. listen C. listen D. to listen
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When class began, we stopped ________ to the teacher carefully.
[ ]
A．listening
B．to listen
C．listen
D．listened
When class began, we stopped ________ to the teacher carefully.
[ ]
A．listening
B．to listen
C．listen
D．listened
When class began, we stopped ________ to the teacher carefully．
[ ]
A．listening
B．listen
C．listens
D．to listen
When class began, we stopped ________ to the teacher carefully.
[
]|
A ．listen |
B ．to listen |
C ．listening |
D ．listened |