C. Of course.                   D. Good luck to you

(     )11.He doesn’t know how ____________.

A. to keep health                B. to stay healthy

C. keeping fit                   D. keeps healthy

(     )12. ----- How often does the girl eat fish?  ---______________.

A. Twice    B.A day    C.Often         D.Two hours

(     )13.It took him two hours _______  the meal by himself.

A. cooking     B. cook     C. to cook       D. cooks

(     )14.The story happened _____ a cold night.

A. in         B. of         C. on            D. at

(     )15.His brother isn’t __________ to do the exercise.

A. clever enough       B. enough   clever

C. funny enough        D. enough funny

(     )16. He spends one hour ______ the work .

A. finishing      B. to finish      C. finishes      D. finish

(     )17. I am good at ______ badminton.

A. play      B. plays         C.to play      D.playing

(     )18.She teaches _______ English.

A. us      B. we        C. I       D.our

(     )19.He is looking forward to ________.

A. my come     B. my coming     C. my comes    D. my to come

(     )20. Does Amy finish ______ the homework ?

A.to do     B. do        C. does     D. doing