—When will your father come back?—______ a week.
A. On B. For C. At D. In
I predict there will be less ______ in the future.
A. people B. trees C. countries D. pollution
—What will the future ________?—In a word, our life will get better and better.
A. like B. be like C. likes D. liking
—Will there be more people in 100 years?—________.
A. No, there isn’t B. No, there aren’t C. No, there won’t D. No, they won’t
The earth is our home. We should play a part in ________ the earth.
A. save B. to save C. saving D. saved
—Can you finish the work on time?—I think I need ________ ten minutes.
A. more B. other C. another D. next
