根据上下文的意思补全对话。在横线上写出所缺少的内容。

Susan: Hello, 1.___________________ Kate?

Mike: Sorry, she isn't in right now. Is that Susan speaking?

Susan: yes. Who's that?

Mike: This is Mike 2.____________________?

Susan: Fine, thanks. Can I leave a message?

Mike: Of course. 3.____________________, please. I'll go and get a pen. (Soon Mike returns.)

Mike: OK, please. Susan: I'd like to ask her if she will go to the English Festival next week. Will you please tell

         her to call me back when she returns?

Mike: No problem. 4._____________________?

Susan: It's 78340631.

Mike: OK, bye-bye.

Susan: Thanks. 5.______________________.

更换完铸钢支座，支座垫砂浆密实、平整，与座板间缝隙不大于（）。

A、1.0mm

B、0.5.mm

C、2.0mm

D、1.5mm