Helen and Mary are good friends. _______often help each other.
#35333
A
Them
B
Theirs
C
They
D
Their
推荐题目
I have a very clever dog. ________ name is Bobo. 
#35146
A
It’s
B
Itself
C
It
D
Its
What’s that?     a box.
#35063
A
It
B
It’s
C
That’s
D
Is
I must thank ____for ____help.
#35106
A
you,hers
B
her,hers
C
you,your
D
his,his