Sometimes I doubt whether it is worth_______so_________.
#48751
A
to work;hard
B
to work;hardly
C
working;hard
D
working;hardly
推荐题目
Uncle Wang made his kite_____higher in the sky. 
#50328
A
fly
B
to fly
C
flies
D
flying
At last the boy was made_____ and began to laugh.
#50101
A
stop crying
B
to stop to cry
C
to stop crying
D
stop to cry.
—You forgot______ off the lights?   It’s still on.—But I remember _______them off before I went out of the room.
#49390
A
turning; to turn
B
to turn; turning
C
turning ; turning
D
to turn; to turn