为保证安全，安装主要电源开关的电气柜应上锁（）
参考答案：错
---I don’t think he has found a job yet because I saw him at home just yesterday.
---________!
No problem B. Maybe
C. Exactly D. Good id
（）Fine, thanks.
A.How do you do?
B.Hello!
C.Nice to meet you.
D.How are you?
