(  ) 16. Tom has ______ breakfast every morning. And he always eats ______ good breakfast.

A. the; the          B. 不填; a   

C. the; a            D. 不填; the

(  ) 17. Boys and girls, it’s time ______ class now.

A. to                  B. for       

C. in                  D. with

(  ) 18. Miss Yang plays tennis ______ swims on the weekend.

A. or                B. but   

C. so                  D. after

(  ) 19. —______ do you usually play the violin?

—On weekends.

A. What time      B. Why   

C. Where            D. When

(  ) 20. My grandfather likes to do morning ______. He often ______ in the park.

A. exercise; exercise   

B. exercises; exercise

C. exercises; exercises 

D. exercise; exercises