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
Our teacher often warns us ________ on the road.
#50858
A
to run
B
running
C
not to run
D
not run
He rushed into the room _____ the baby in the fire.
#50740
A
to save
B
saving
C
and save
D
save
--- 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