Did you hear someone__door while you __TV last light Yes,I did,I opened the door but found nobodyoutsideAknocking at was watchingBknock at were watching选C,为什么不选A,hear sb do sth 和doing都有啊
问题描述：
Did you hear someone__door while you __TV last light Yes,I did,I opened the door but found nobody
outside
Aknocking at was watching
Bknock at were watching
选C,为什么不选A,hear sb do sth 和doing都有啊
答
knocking at, were watching
knock at, were watching
A中答案was不能和you搭。
祝你学习进步！给个采纳赞同哟。。。。。。
答
你只列了A和B两个选项
不过A的后半部分很显然已经是不对的了。后面主语是you, 系动词过去式是were
答
you 要用were 啊!
很高兴为你解答!
老师祝你学习进步!
请及时采纳哦!多谢你的问题!^_^