The place the bridge is supposed to be built should be the cross river traffic is the heaviest.
The problem is_______ he has enough time.
_______ the sports meet will be held depends on the weather.
I.单项选择Go and get your coat. It's _______ you left it.
Those students ___ in this topic may joing us in the disscussion.
--Is the radio bothering you?---It certainly is.I’d like it ___ off.