They will protect their families if there is ____________.
A. dangerous B. in danger C. danger D. in dangerous
In many countries, children must go to school ___________ the age of 5 and 16.
A. between B. among C. in D. at
—_______ did you weigh when you were born?
—My mother says I weighed only 2 kilograms at birth.
A. What B. How much C. How many D. How heavy
If________a meeting this afternoon，we won’t go to the Zoo．
A. there will be B. there has
C. there is D. there will have
The lady in this photo _______be over fifty! She looks so young!
A. can’ t B. must C. mustn't D. can
After class the students went out of the classroom one after________．
A. other B. the other
C. others D. another
