听录音，选出最佳答案，写编号。
（1）A. There are 20.
B. I can see 20.
C. I have 20.
（2）A. Yes, it isn’t.
B. Yes, it is.
C. No, it is.
（3）A. They are 40.
B. They are 40 yuan.
C. It’s 40 yuan.
（4）A. This is pencils.
B. These are pencil.
C. They are pencils.
（5）A. It’s is 5 o’clock.
B. It’s 5 o’clock.
C. There are 5 clocks.
（6）A. Yes, I want a shirt.
B. I can see one.
C. No, it’s not.
（7）A. There are 100.
B. They are expensive.
C. The socks are 500 yuan.
（8）A. Yes, it is.
B. Yes, he is.
C. Yes, she is.
（9）A. It’s a blue duck.
B. They are blue.
C. It’s blue.
（10）A. Yes, you do.
B. Yes, you can.
C. No, I don’t.
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