He must be helping the old man to water the flowers，________？
#64494
A
is he
B
isn't he
C
must be
D
mustn't he
推荐题目
---___________ English classes do you have every week? --- Five.
#60215
A
How often
B
How long
C
How much
D
How many
I’m sure that the teacher’s told you about the your result of the examination. ______ ?
#64737
A
am not I
B
hasn’t he
C
aren’t you
D
isn’t he
A: Alice, you clean the house, ? B: But I did it yesterday.
#64585
A
do you
B
will you
C
didn’t you
D
don’t you