—______ will you come back from Shanghai?    —In one month.

—Which hat do you like___, the blue one or the brown one? —The brown one.

 —______ do you surf the Internet?—About twice a week.

—I like this sweater. I’ll take it. —Please pay for (付款) it. It’s 100 yuan.

 It is________ now and there are some________ in the sky.