“________bookcase is this?”“It must be________.”
--- Must I return the book today? I haven’t finished it.---It depends on how long you have ____________ it? You should return it two weeks.
That man ______be Mr Wang , because he has gone to Beijing.
--- Why are they going to Wenchuan this winter?--- They’re going to be a volunteer there and _____________ the people in the disaster area.
---Do you like playing _____piano or surfing _____Internet?---Neither. I like playing the guitar.
--- What kind of sweater would you like?--- The ____________, the better. I don’t want to spend much on clothes.