听问句选答语，将其序号填写在前面的括号里。
1.A. I want a cola. B. I want a hot dog.
2.A. We are singing. B. We’re going to sing.
3.A. It’s going to rain. B. It’s sunny.
4.A.Because I am happy. B. I’m reading.
5.A. I can write. B. I could read.
