---What _______ you ________ ? ---I’m doing my homework.
#60216
A
do; do
B
are; do
C
are; doing
D
can; do
推荐题目
I don’t think his daughter is able to mend a computer, ________?
#64924
A
does he
B
isn’t she
C
doesn’t he
D
is she
Fighting an artificial greenhouse effect seems to be the greatest of environmental challenges, ________？
#64479
A
isn't it
B
does it
C
doesn't it
D
is it
---______ have you been in class today? ---For two hours.
#59891
A
How often
B
How long
C
How many
D
How soon