He was so busy ____ his homework that he forgot to have supper.
#49628
A
to do
B
do
C
doing
D
does
推荐题目
—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
—Would you mind me________ the door ?—______________. Please do it now.
#50423
A
closing, Of course
B
toclose, Of coursenot
C
closing, Certainly not
D
close, Certainly