---          a month do you do voluntary work ? ---Twice a month. 
#59864
A
How long
B
How many times
C
How much
D
How often
推荐题目
— Have you heard the latest news? —No, what______?
#64966
A
is it
B
is there
C
are they
D
are those
--How does your mother look?---______________
#60179
A
She is a teacher.
B
She likes reading.
C
She looks tall and slim.
D
She walks to school.
–Do you like  maths ?---       
#60014
A
Yes ,I don’t
B
No , I do
C
Yes , I am
D
Yes , I do