听句子，选择答案。听5个句子，每个句子后有一个小题，从题中所给的 A、B、C 三个选项中选出与所听句子内容相符的正确答语。
（1）、
A、Never mind.
B、No problem.
C、Not at all
（2）、
A、I have a cold.
B、I have a dog.
C、I have to do.
（3）、
A、By car.
B、At the airport.
C、At 4:00 p.m.
（4）、
A、That's right.
B、Good idea.
C、You're welcome.
（5）、
A、I was writing.
B、I am singing.
C、I was at home.
