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
---Do you have any problems ______ your business?---No．thank you very much．
#50122
A
deal
B
deal with
C
dealing
D
dealing with
My teacher is an interesting man, his words made everyone _________.
#48872
A
laughed
B
to laugh
C
laugh
D
laughs
---Why does Tommy look unhappy ? --- Because his teacher makes him _______ the classroom all by himself .
#50728
A
to clean
B
clean
C
cleans
D
cleaning