—What’s your mother__________ now? —She’s __________ our house.
#37985
A
doing, clean
B
do; clean
C
does; cleans
D
doing; cleaning
推荐题目
—Excuse me, Mum. When can we have dinner?—Not until it                in half an hour.
#39775
A
is prepared
B
will be prepared
C
has been prepared
D
was prepared
—— What’s she doing for vacation?——She’s _____ Beijing. 
#41914
A
visiting
B
visits
C
visiting
D
is visiting
It’s two and a half weeks since the exchange students __________ Taixing.
#41756
A
arrived
B
reached
C
have been in
D
have arrived in
—How many times ________ Li Yan ________ to the Great Wall?—Twice.
#38217
A
has; been
B
is; going
C
has; gone
D
does; go