the keys must be the --(sing),i found him lookin
I found him in the office.A.sing B.sings C.was singing
He has found the keys
i must have left the keys in the cofe.
The people must be ______ an water must be found.
I hear him sing the English song.
I found him in the office
I found him lying on the ground.
:Lookin'back on the things I've done,I was tryin'to be someo
the man over there must be very rich.I ofen see him wearing
I often hear him sing the same song被动语态
I often hear him _____ ( sing ) in the next room.
I heard him sing in the classroom改为被动语态?