—Who is playing the piano in the classroom?
—_______ must be Susan. She plays the piano after school every day.
| A．She | B．It | C．This | D．He |
—We’re organizing a party next Saturday, and I’d like you to come.
— ______! I have a meeting to attend that day. Thank you all the same.
| A．Good luck | B．What a pity |
| C．Never do it again | D．Well done |
We can make a fire ______ the room warm so that we can chat for a while.
| A．to keep | B．keeping | C．keep | D．kept |
He had to retire(退休) early ______ poor health.
| A．as a result | B．because |
| C．so | D．because of |
One of the most interesting places in Yangzhou ________ are often visited by foreigners is the West Slender Lake.
| A．what | B．who | C．that | D．/ |
—I can’t find Mary. Where’s she?
—Sorry, I don’t know ______.
| A．where has she been | B．where she has been |
| C．where has she gone | D．where she has gone |