问题
选择题
Usually, when we see our teachers come into the classroom, we all stop ________ and get ready for class. [ ]
A. talk
B. to talk
C. talking
D. to talking
答案
答案：C
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Usually, when we see our teachers come into the classroom, we all stop ________ and get ready for class. [ ]
A. talk
B. to talk
C. talking
D. to talking
答案：C