The house caught___fire last night but no one knows who set ___fire to it. A. X;X B.X;a C, a; a D, a; X
The large grassland, reaching out far away, looks extremely beautiful _______ the blue and clean sky.
——Doctor, what do you think about the operation on my mom? ——Couldn’t be better.I’m sure she’ll recover ___________.
---Do you really want to go out? ---It may rain.________ I shall go out; I don’t mind the rain.
Chongqing doesn’t _____me.It is so hot that I can’t ______it indeed.
The CDs are on sale! Buy one and you get _____ completely free.