You shouldn't go out at night without _____ your parents.
A. to tell B. telling C. tell
（题文）— What a great gift! I'm _____.Who bought it for me?
— Your best friend, Paul.
A. surprising B. surprised C. surprise
— Nothing and nobody can live _____ air and water.
— I agree _____ you.
A. with, with B. without, with C. in, with
I _____ his invitation because I had to look after my sister.
A. turned on B. turned down C. turned off
— Do you know _____ the party will begin?
— Maybe in half an hour.
A. how B. where C. when
—Tom, you look tired this morning. What's wrong?
—I was so busy that I didn't go to bed _____ 12 o'clock last night.
A. until B. when C. though
