. Mary was only too ready to help others, seldom, _____, refusing them when they turned to her.
#93936
A
if never
B
if not
C
if any
D
if ever
推荐题目
I often visit my parents, who live in the countryside  whenever ____.
#92836
A
I am convenient
B
it will be convenient to me
C
I will be convenient
D
it is convenient to me
          any further information, please contact us in our office in London.
#92585
A
Should you require
B
You should require
C
Must you require
D
You must require
 It is the first time that you have come to China, _____?
#95178
A
haven’t you
B
isn’t it
C
hasn’t it
D
aren’t you