根據(jù)對(duì)話填寫數(shù)字。
A: Hello, Amy. How many apples are there on the table?
B: Twelve. Hi, Sarah. How many flowers are there?
A: Twenty. I have six oranges. How many ants are there on the floor?
B: Wow! There are thirty.
1.  _______________
2.  _______________
3.  _______________
4.  _______________
1. 12  2. 20  3. 30  4. 6
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