选词填空。
    Sally wants to go shopping (去购物). She needs a sweater and two of socks. She asks her good friend Helen to go with her, because she  some advice (建议). They go to the clothes . Sally likes the yellow sweater, but it doesn't nice on her. The blue one is better, so she wants to it. "Don't forget the socks," Helen says. Then she helps Sally select (挑选) some socks. At last, Sally takes the sweater and some socks. She takes a for Helen, too.
Helen is so happy.