Help____to some fruit,Mary.
A. you
B. your
C. yourself
D. yours
____English teacher is Mrs. Green.
A. We
B. Us
C. Our
D. Ourselves
Bob and Tom said____wouldn't be able to come.
A. they
B. them
C. their
D. themselves
--Where's your office?--____is on the third floor.
A. It
B. Its
C. Itself