1. It sounds like a good idea, but it _________ to be seen whether it will succeed.
A. leaves B. remains C. stays D. reminds
2. Without the air to hold some of the sun’s heat, the earth at night _____ too cold for us to live.
A. would be freezing cold B. will be freezing coldly
C. would be frozen cold D. can freeze coldly
3. At the back of the book _______ of the works available for further research.
A. listed are the titles B. are the titles listed
C. are listed the titles D. the titles are listed
