Where did you go ______ vacation ?A.at B.on C.in
— Why are you looking in class all day? —Because I can’t finish my homework until eleven every night.
You can’t imagine__________ when they saw the nice Christmas presents.
—How long do you think it’ll be ______ I can go back to school?—Well, you will be feeling much better by next weekend.
— How is your cousin, Andy?—He lives abroad, so I _________ ever see him.
— What a beautiful birthday cake!—Yes, it’s ________ my mom. I received it this morning.