81. I have seen worse 我見過更糟的

　　82. in advance 提前;同義：before hand. ahead of time

　　It's a really nice apartment. But the owners want two-month rent in advance and I just don 't have it.

　　83. in case 萬一

　　Let's take our suits along in case the sun comes out.

　　84. in next to no time 馬上

　　A: Are you going to be using the copying machine long?

　　B: I'll be through in next to no time.

　　85. in the red 赤字 反義：in the black

　　86.in the works 正在準(zhǔn)備階段

　　An advanced course in theoretical chemistry is the works.

　　87. keep to oneself

　　I'm amazed that you still haven't gotten to know your neighbors.

　　88. kill time 浪費時間

　　Gosh. what can we do to kill the next 10 hours?

　　89. leave…up to somebody

　　We'll have to leave the decision up to him.

　　90. letter of recommendation 推薦信;letter of reference 推薦信

　　91. look on the bright sides of things 看事物的光明面

　　92. no kidding 不是開玩笑吧

　　93. on the tip of one's tongue 就在舌尖

　　A: Are you sure you can't remember the name of that record?

　　B: It's just on the tip of my tongue!

　　94. quitting time 下課時間

　　I'm glad it's almost quitting time.

　　95. take it over 重修

　　Don failed physics and had to take it over.

　　96. than necessary 比應(yīng)該的要冷

　　The lab was cooler than necessary.

　　97. That's easer said than done. 說來容易做來難

　　98. There is nothing to it. 沒什么，很容易

　　I can run this projector. There's really nothing to it.

　　99. with flying colors 成功

　　A: How did Ellen do on her American History exam?

　　B: She passed with flying colors.

　　100. You can bet your life 當(dāng)然

　　A: Will Prof. Smith come to class on time?

　　B: You can bet your life.