The children stood on the pavement , . [ ] A.watching the buses coming and going
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![The children stood on the pavement , . [ ] A.watching the buses coming and going](/pic/43_997932.jpg)
The children stood on the pavement , ________ .
[]
A.watching the buses coming and going
B.watched the buses coming and going
C.when watched the buses coming and going
试题答案
答案:A