He keeps _____ exercise every morning to keep healthy.

A. do
B. to do
C. does
D. doing
相關(guān)習(xí)題

科目:初中英語 來源:月考題 題型:單選題

He keeps _____ exercise every morning to keep healthy.
[     ]
A. do
B. to do
C. does
D. doing

查看答案和解析>>


同步練習(xí)冊答案