21、十分抱歉。
I'm very sorry.。
22、心不在焉。
be absent-minded。
23、每况愈下。
go from bad to worse。
24、挑灯夜战。
Burn the midnight oil.
25、真了不起。
Really great.
26、我流鼻涕。
I have a runny nose.
27、这才对嘛。
That's right.
28、说做就做。
Do it as you say.
29、你自找的。
You asked for it.
30、久仰大名！
I've heard so much about you!
