3.1 Rewrite the following sentences, using a sentence pattern from one of the boxes below.1 He has fully recovered from his bad accident. This shows that medicine can work wonders.____________________________________________________________________________2 Why are businesses moving their plants to developing countries? It's because labor costs in their home countries are too high._____________________________________________________________________________3 Our rivers are running dry or being polluted. If we go on ignoring this, the consequences (后果) will not be hard to predict.______________________________________________________________________________4 Last year's crop wasn't good. That's why food prices are rising.______________________________________________________________________________3.2 Rewrite the following sentences, using the sentence pattern from the box below.1 Did the chicken come before the egg, or the egg before the chicken? This is a question of how life began in general._____________________________________________________________________________2 I saw her on the point of tears when she got the result of the exam. Should we go to comfort her? Or should we just leave her alone? I don't know._____________________________________________________________________________3 Does she still want to go to the lake? Or has she changed her mind? It's not clear._____________________________________________________________________________4 Should young married couples buy or just rent an apartment? Many are wondering._____________________________________________________________________________