Lisa: Can I help you? Sandra:(51)______ I want a skirt. Lisa: What color do you like? Sandra:(52)______Lisa: What about this blue one? It’s nice. Sandra: Can I try it on (试穿)? Lisa: Sure. Sandra:(53)______Lisa: What about the yellow one? It’s big.Sandra: Hmm ... It’s good. (54)______Lisa: It’s $39. Sandra:(55)______ Thank you.Lisa: You’re welcome.