—It’s good to see you again.
—Yes. I keep all the letters __________ you wrote to me over the years.
A. who B. that C. when D. where
I know the writer __________ story won a prize for the most imagination.
A. that B. which C. whose D. what
With the help of __________ people, I can be more successful in volunteer work.
A. serious B. generous C. nervous D. dangerous
—I’m going to see John tomorrow.
—Don’t tell him the result of his medical examination when you __________ to him.
A. talk B. have talked C. will talk D. talked
People around the country were excited __________ the astronauts came back to the earth safely.
A. unless B. but C. until D. because
—I’ll call Bob and tell him the good news.
—You __________ do that. He was here just now and heard it.
A. couldn’t B. mustn’t C. shouldn’t D. needn’t
