—Shall we go out for a swim?—Sorry, I can’t. I ______ housework for my mother now.
#42129
A
am doing
B
is doing
C
are doing
D
did
推荐题目
By the end of the last month, I _____________ all the CDs of Justin Bieber.
#41903
A
collect
B
collected
C
have collected
D
had collected
My mother _______________ my aunt called her.
#41811
A
was cooking while
B
cooked when
C
cooked while
D
was cooking when
All the new books _______ to the poor village next month.
#41578
A
were sent
B
will be send
C
are sent
D
will be sent