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.