---Who is that girl ? ---_____ is my sister .
A. I B. He C. She
A ruler, Sam? Yes, ______.
A. please B. I haveC. Here you are
I have a new ballpen. It’s _____ orange.
A. a B. an C. /
Excuse me. Is _____ the office?
A. heB. she C. it
How many pens are there on the desk? _____ one.
A. There areB. There is C. It is
______ my good friend.
A. There areB. This isC. They’re