– Do you think Sonia will pass the math exam?
– Sure. She’s ________ so much time on it.
A. costB. paidC. spent
– Have you decided how to spend your next day off?
– Not yet. We ________ join the school volunteer project.
A. mayB. shouldC. must
– What do you think of Lucy’s birthday party?
– ________. I hope I can have such a party too.
A. WonderfulB. TerribleC. Boring
This is Mr White’s ________ trip to Beijing. He has been there twice before.
A. firstB. secondC. third
– ________ do you hang out with your friends?
– About once a week.
A. How soonB. How oftenC. How long
We will have no water to drink _________ we don’t protect the earth.
A. untilB. ifC. unless
