—What should I do, doctor?   —______healthy, you should take more exercise.
#50576
A
To keep
B
Keep
C
Keeping
D
Kept
推荐题目
I spent half an hour ___________ my homework. 
#49163
A
finish doing
B
to finish doing
C
finishing to do
D
finishing doing
I like the ____ the story. It’s  fun.
#51243
A
begin
B
begin of
C
beginning
D
beginning of
 Let’s go to Beijing ______ the Great Wall.
#50550
A
to look
B
watches
C
to visit
D
visits