--What        you         for your vacation? --I plan to visit my grandparents.
#40530
A
do, do
B
are, doing
C
did, do
D
are, do
推荐题目
Mr. Wu___this math problem____him many times, but he still doesn’t understand it.
#38768
A
explains ; to
B
has explained ; for
C
has explained ; to
D
explained ; with
 Look! They _______________ a picnic.
#36213
A
have
B
is having
C
are having
D
having
Mr. White           a lot of places of interest in China .
#39893
A
have gone to
B
has gone to
C
have been to
D
has been to
A student _________ from a tree and __________ his right leg.
#41975
A
fell; hurted
B
fell; hurt
C
falled; hurt
D
falled; hurted
—What’s that noise?—Oh, I forgot to tell you. The neighbors _______ for a party.
#41904
A
prepare
B
are preparing
C
will prepare
D
have prepared