They are nice boys and I'm sure you'll get on well with( ).
A. they
B. their
C. theirs
D. them
They came to help us as soon as they finish ( ) work
A. their
B. them
C. they
D. theirs
This is my book, () is on the desk.
A. you
B. yours
C. your
D. she
Can you help ( ) do some housework?
A. me
B. I
C. my
D. mine