__________ is really hard __ them to climb such a high mountain.
| A．This; to | B．It; to |
| C．This; for | D．It; for |
—Is Mr. Wang your teacher?
—Yes, and ____ is an good English teacher.
A. he B. she C. it
—____ ? —Yes, I’m Mike.
A. What’s your name?
B. What are you?
C. Are you Mike?
--Mary and I ____ from the U.S.A.
A. am B.is C. are
—Look! That’s ______ big orange.
A. a B. an C. the
从II栏中找出I栏句子的正确答语,将序号写在（）中. (8分)
I栏II栏