--- ___________the population of the U.S.A.?--- 296 million.A. What B. How many is C. What’s
______we take exercise, _____ we will be.
-Must I finish all the homework this evening?-No, you __________. Tomorrow is Saturday, and you have enough time for it.
We teenagers shouldn’t just ________ our looks.We should develop our abilities.
Now most families have only one child _____ our country’s one-child policy.
On ________ , American children often give flowers and cards to their mothers to thank them.