选择合适的句子补全对话。
| A.How many bananas did you buy? |
| B.How many oranges did you buy? |
| C.What did you buy, Mary? |
| D.How many apples did you buy, Bob? |
Bob: ___________
Mary: I bought some bananas.
Bob: ___________
Mary: I bought ten bananas. ___________
Bob: I didn't buy any apples. I bought some oranges.
Mary: ___________
Bob: I bought six oranges.