单选题 The second paragraph is about ways to decide whether teaching should be one's future employment.

单选题 - I wonder if I could use your computer tonight?
- ___________ I'm not using it right now.

单选题 A teacher should show a firm mind that is able to control tiredness and unhappiness.

单选题 - Excuse me, could you tell me the time?
- _________

单选题 The first paragraph is mainly about how to plan lessons and prepare homework.

单选题 - Could I borrow your car for a few days?
- ________

单选题 - Excuse me, could you show me the way to the nearest post office?
- ______Oh yes! Two blocks away from here at the Green Avenue. You can't miss it.

单选题 - Unbelievable! I have failed the driving test again!
- _______ This is not the end of the world.