You’ve _______ such a good idea, thank you. We’ll try it at once.

A few students don’t know ________ they should deal with stress before________ an exam.

MrBlack________ Shanghai in a few daysDo you know when the earliest plane ________on Sunday?

下列各选项中，没有语病的一项是（ ）

I don’t doubt _________ his advice is well worth________.