I don’t know             . Can you help me?
#59879
A
how to do it
B
how to do
C
what to do it
D
to do what
推荐题目
It is the first time that Martin has been to the South Pole, ________?
#64905
A
isn’t he
B
hasn’t he
C
isn’t it
D
hasn’t it
Mary has few friends in Japan,      she?
#65264
A
has
B
don’t
C
doesn’t
D
hasn’t
Many of your classmates dislike having to stay up late doing their lessons, _____? 
#64552
A
do they
B
have they
C
don’t they
D
haven’t they
 Barry has visited the Eiffel Tower before, _____ he?
#64766
A
mustn’t
B
hasn’t
C
didn’t
D
needn’t