We didn’t start our party _______ everyone arrived.
.I heard a new song on the radio.I ______high and low in the music store, but I can’t find the song.
Get up early,______you’ll be late for school.
Could you tell me how long _____the football club?
--________ How long haven’t you cleaned your room?--Two months at least--No wonder(难怪)it’s so untidy.
_____of the land in that area ______covered with trees and grass.