________ hard is the key to success. 
#51086
A
To work
B
Work
C
Worked
D
Works
推荐题目
—I can’t stand ___________ hamburgers every noon. —Then why not stop ________ another kind of food?
#50573
A
eating; having
B
to eat; to have
C
eating; to have
D
to eat; having
Teachers’ job is ______ the students learn well.
#50176
A
helping
B
help
C
to help
D
helped
—It’s too hot . Would you mind my ____ the window?—_______ . Do as you like, please!
#50075
A
open; Sorry
B
opening; Certainly not
C
opening; Sorry
D
open; Certainly not