---Where is your brother? ---He is in Beijing. He _____ back in three days.
Would you like _____________ to drink?
---_____________ are they? --- They are fine.
This is _____ best kind of _____ pen you can get here.
They would like _____to school by car. A. go B. to go C. going
I’m going to stay at the home _____it’s raining outside. A. because B. so C. but