( )1. —Will there be more people in 100 years, do you think? —_____,I hope.
A. No, there isn’t B. No, there aren’t C. No, there won’t D. No, they won’t.
( ) 2. If there are _____trees, the air in our city will be _____ cleaner.
A. less; more B. more; more C. more; much D. much; more
( ) 3. I predict he will be an engineer _____ten years because he is so interested in making things.
A. in B. after C. later D. for
( ) 4. There were many famous predictions that never_____.
A. come true B. came real C. came true D. be true
( ) 5. How many people _______ there fifty years ago.
A. will B. were C. are D. will be
