—Oh, it’s too difficult for me ____________ the task in such a short time.—Cheer up! I am sure you can. 
#49214
A
finish
B
to finish
C
finished
D
finishing
推荐题目
Don’t forget      the lights when you leave.
#50822
A
to turn on
B
turn on
C
to turn off
D
turning off
Now I’m ________ my turn. 
#50482
A
wait for
B
waiting for
C
waiting
D
waiting to
Tom was made ___________ on the farm from morning till night.
#49940
A
to work
B
work
C
working
D
worked
--- You look ______,Paul. What’s the matter?--- I’m having trouble ______ math.
#51056
A
tired, to learn
B
worried, learning
C
frustrated, to learn
D
angrily, learning