II. Put in the correct preposition.
1. for (wait for sb/sth to V: đợi ai/cái gì làm gì)
2. for (ask for sth: hỏi về cái gì)
3. for (What... for? = Why... ?: Tại sao?)
4. from (protect sth from sth: bảo vệ cái gì khỏi gì)
III. Rearrange the given words to make a full sentence.
1. We have waited for Steve for half an hour.
- wait for sb: chờ đợi ai.
2. The war victims suffered terribly from hunger and cold.
- suffer from sth: chịu đựng cái gì.
3. He always prevented me from doing my duty.
- prevent sb from V-ing: ngăn cản ai làm gì.
4. He congratulated me on winning the competition.
- congratulate sb on V-ing: chúc mừng ai về điều gì.
5. Please listen to what I'm saying.
- listen to: nghe.