Christopher ________ charity work by raising a lot of money to promote medical research.
A. came to B. came up with
C. pulled through D. got involved with
Yang Liwei showed the flags of China and the United Nations, ________ the wishes of Chinese people to use space peacefully.
A. expressing B. expressed
C. to express D. express
-- The last one ________ pays the meal. --- Agreed.
A. arrived B. to arrive
C. arrives D. arriving
She had to leave school_______ her family couldn’t afford her education.
A. although B. unless
C. because D. so
The old man has retired from the factory. He _____ there for 30 years.
A. works B. worked
C. has worked D. was working
— I don’t mind telling you what I know.
— You _______. I can manage it myself.
A. mustn’t B. ought not to
C. can’t D. don’t have to
