The only person who understood the guest lecturer was the professor.

73,hand-me-down 送的东西
A: What a gorgeous¹ jacket. It must have cost a fortune.
B: Not at all. It’s a hand-me-down.

74,hand down 易如反掌
Lee won the chess match hands down.

75,have a way with 擅长
Bonnie really has a way with words.

76,have had it with 处于
I’ve had it with being sick in bed. I’ve read most of these magazines twice.

77, head and shoulders above 高出许多
In computer programming, Susan is head and shoulders above the rest of us.

78, hit the spots 特别好
This lemonade sure hits the spots.

79, hold the grudge² 记仇
A: I wish I hadn’t hurt Mary’s feelings like that. You know I never meant to.
B: The great thing about Mary is that she doesn’t hold the grudge.

80, I have no idea which way to turn 我不知道该怎么办

81, I have seen worse 我见过更糟的

82, in advance 提前；同义：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 万一
Let’s take our suits along in case the sun comes out.

84, in next to no time 马上
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 反义：in the black

86,in the works 正在准备阶段
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 浪费时间
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 recommendation³ 推荐信；letter of reference⁴ 推荐信

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

92, no kidding 不是开玩笑吧

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 下课时间
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 比应该的要冷
The lab was cooler than necessary.

97, That’s easer said than done. 说来容易做来难

98, There is nothing to it. 没什么，很容易
I can run this projector⁵. 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 当然
A: Will Prof. Smith come to class on time?
B: You can bet your life.