2 . 单句改错
1. People are banned smoking in many public places in England.
2. To our delight, everything goes on smoothly according the plan.
3. If buyers pay in advance, they can make large wholesale purchases at discount.
4. You'd better make an apology to your teacher for your late.
5. We were loading the luggages into the car when it began to rain.
6. I feel confusing by his offering me the two suggestions.
7. Dear passengers, please remain seating until the bus totally stops.
8. They arrived at a farmhouse, but, to their surprise, in front of which sat a little boy crying aloud.
9. Nothing else is precious than water in the desert.
10. He has two daughters, all of whom aren't nurses.

4 . 增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。
删除：把多余的词用斜线（/）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：每句仅有一处错误，每处错误仅限一词。
1. How relaxed it is to take a walk after supper every day!
2. That’s where people call the underground in London.
3. Work hard, or you will pass the exam.
4. Sunglasses can protect your eyes to the strong sunshine.
5. What an amazing progress you have made!
6. He was very strict in his son.
7. They are competing against the gold medal.
8. Tom expressed a keen interest on playing football.
9. I was very surprised that I couldn’t say a word.
10. Tom got home, tiring and cold.