A：____Can I have some paper and some crayons B_____?A I want to make a kite 对划线部分提问.还有一个,A：____is your cousin?B:He's 15 years old.
问题描述：
A：____Can I have some paper and some crayons B_____?A I want to make a kite 对划线部分提问.
还有一个,A：____is your cousin?B:He's 15 years old.
答
why 为什么（要这些）？/for what purpose？ （要来）干什么？
how old，“多大了”，因为后面回答的是十五岁。
答
A：Can I have some paper and some crayons B【What for】?A I want to make a kite
A：【How old】is your cousin?B:He's 15 years old.