— Could you please do some shopping for me, Mary?— Sorry, I ______ my homework.
#42147
A
do
B
am doing
C
have done
D
was doing
推荐题目
----What a nice bike! How long ____ you ____it? ----- Just two weeks.
#37320
A
have, bought
B
did, buy
C
have, had
D
are, having
Look! The police ______ the food onto the bank of the river.
#36799
A
am carrying
B
is carrying
C
are carrying
D
are carried
— A computer is very popular and helpful .— I think so. It _______ in many different fields.
#36579
A
used
B
will use
C
is used
D
was used
--When did you become a volunteer for the elderly?-- Two years ago. I ______ this group since then.
#41941
A
joined
B
took part in
C
have joined
D
have been in