How much do you ________ a single room every night?
A. payB. pay forC. takeD. spend
The students like to go ________ a trip________ spring.
A. on; onB. in; 
onC. to; inD. on; in
On Teachers’ Day, I sent a ________ to my English teacher, and said “Happy Teachers’ Day” on it.
A. stamp B. pen C. postcard D. ticket
—It’s 9 o’clock now. I must go.
—It’s raining outside. Don’t leave ________ it stops.
A. whenB. sinceC. whileD. until
—Kangkang, I’d like you to meet him.
—________ I’m looking forward to meeting him.
A. Perfect!B. You bet!C. Good idea!D. Sure!
—Is your brother in?
—No. ________ he comes back, I’ll tell you.
A. As B. As soon asC. AfterD. Since
