六、选择合适的选项补全对话。
(Mike is at Grandpa's farm. . . )
Mike:1. ________
Grandpa: Guess.
Mike:2. ________
Grandpa: No, they aren't. They're tomatoes.
Mike:3. ________
Grandpa: Let me see. . . Forty.
Mike: What about these?
Grandpa: They're carrots. 4. ________
Mike: Thank you. Grandpa.
Grandpa:5. ________
Mike: Yes. Yum.
A. How many tomatoes are there?
B. What are these, Grandpa?
C. Are they good?
D. Try some!
E. Are they oranges?

1. B；2. E；3. A；4. D；5. C