—What about going shopping together? —Sorry, I have a lot of homework ____. 
#40208
A
do
B
to do
C
doing
D
did
推荐题目
Mr. Wu is good ____ math. He teaches _____ math well.
#42923
A
for; our
B
at; our
C
with ;our
D
at ;us
 All the _________ things need air and water. Without air or water, nothing can stay _______.
#42324
A
living; living
B
living; alive
C
alive; alive
D
alive; living