Isawthem()basketballwhenIwalkedpasttheplaygroundjustnowAwereplayingBpiayingCcheaper,muchDcheap,more(解析
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题目内容：
I saw them( )basketball when I walked past the playground just now A were playing B piaying
C cheaper,much D cheap,more(解析
优质解答
B
see sb do sth 看见 .经常干 .
see sb doing看见 .正在干 .
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