3a 部分答案
They are going to sell old toys and football shirts at the yard sale.
（答案仅供参考）
3b 部分答案
1. Because they have too many things in the house and don't seem to have enough space.
2. They want to give the money to a children's home.
3. Because he has had it since his fourth birthday,and he played with it almost every week until he was about seven.
4. Old toys can bring joy to children who don't have the money to buy toys.
5. Yes,I have. I would give it to the charity.
（答案仅供参考）
3c 部分答案
kids—children
truthful—honest
many—a lot of
some time—a while
even though—although
quickly—fast
older—growing up
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