Are you going _____vacation next month?[ ]

I think that this meal was well worth _______ was charged for it.

You look worried. What’s the matter? —I _____ the exam yesterday.

Don’t be angry.(别生气) She is only child.

I rang the bell for a long time last night, but no one opened the door.— Oh, the family __________ a party and they didn’t hear the bell.