5. The students completely¹ filled the classroom.
Fill是"装满"的意思，这里是指学生挤满了课室。

6. Peter blames himself for what happened.

Blame oneself for something - 因为某事责怪自己。

Who's to blame?－这要怪谁？
He's to blame. 这要怪他。

You're to blame. =It's all your fault. 这都是你的错。

Don't blame yourself. You are not to blame. (It's not your fault.) 不要责怪你自己。这不是你的错。

7. The controller made a mistake and overcharged Amy for her tuition².

Charge是"收费"的意思， overcharge是"收多了钱"。
I got short-changed. 是指别人找钱找少给我了。

8. Have the driver let you off at the intersection³. -叫司机在交叉口处让你下车。

Let you off意思是"让你下车"， 中国学生很容易按照中文来翻译，"let you get off the bus"语法上是没有错误的，但是现实中常常不这么罗嗦。学习英文应该多注意英文的表达方法，而不是想如何把中文翻译成英文。
这个例句还有一个托福经常考的结构：Have somebody do something:让某人做某事。

类似的常考结构：get somebody to do something. 不过这个结构的侧重点是自己不干，叫别人去干。

9. I've almost finished typing my homework paper.
Finish doing something=做完一件事情。 在口语中也说 be done with sth./doing something.
I am done with typing my homework paper.

有时我的外国同事问我有没有干完手头的活也说，"Are you done?"

10. Has my unabridged dictionary arrived yet?

Abridge- 删节, 削减, 精简 unabridged 是指未经过删节的，原版的。
Abridged⁴ novels就是简写版小说

11. A: How did you ever move that desk upstairs to your room?
B: It was very heavy, but I got my roommates to help me with it
A: 你究竟时怎么把那个桌子搬进你的房子的？
B: 那个桌子很重，但是我叫我的舍友帮我搬。

How did you ever do something?
通常用来问别人时究竟怎么把一件比较难办的事情办成的。 "ever"在这里不是"曾经"的意思，只是用来加强语气。

Get my roommate to help me with it. 这里有两个结构：
Get somebody to do something: 叫某人做某事 （托福常考结构）
Help somebody with something：帮助某人做某事

学习英文要时刻注意总结固定的搭配和结构，这样才能写出和讲出地道的英语。虽然简单，但是不小心还是会用错。

另外一个『托福原句』You certainly had a lot of boxes. How did you ever find room for everything? －你的盒子真多。你究竟时怎么找地方放这些东西的。