Helen was so excited at the news that she could say a word.
------This is really a difficult problem.------Yes, that’s true, but she managed to solve it.A. failed to solveB. liked to solveC. succeeded in solving
When you ________, you start a journey. A. set off B. put off C. get off
The dish smells ______ but tastes________. A. good; bad B. well; nice C. nice; good
—Don’t leave your computer_____ if you don’t use it. Electricity is valuable. — Sorry, I won’t. A. on B. out C. off
The air_______ of Shenzhen in February ranked the 10th among 74major cities in China. A. quarter B. quality C. quantity