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
I don’t believe you can do today’s job with yesterday’s methods and be in business tomorrow， ?
#64697
A
do I
B
don’t I
C
can you
D
can’t you
-- _____________did your uncle leave his hometown ?--He ____________ for nearly twenty years.
#60219
A
When, has left
B
When, has been away
C
How long, has left
D
How long, has been away
He knows so much about the story. He must have read the book, _______?
#65378
A
mustn’t he
B
doesn’t he
C
hasn’t he
D
didn’t he
--- has your grandma been like this? --- Since last night.
#60203
A
How often
B
How long
C
When
D
How soon