【推荐2】_________________________,   he cared for nature more than before. So he started to study ecology.  经历了地震, 他比以前更关心大自然了。于是他开始研究生态学。（根据汉语意思完成句子）

【推荐3】When he was watching TV, my grandfather fell asleep.（句型转换）
→________ TV, my grandfather fell asleep.

【推荐1】Directions: Rewrite the following sentences, using a present participle （-ing） or past participle （-ed） with an adverbial meaning.
1. When she saw the dog coming towards her, she quickly crossed the road.
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2. As she was dressed all in black, she couldn't be seen in the starless night.
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3. She didn't know where the theatre was, so she asked for directions at the hotel reception.
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4. He had spent his childhood in Shanghai so he knew the city very well.
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5. As I don't have a credit card，I found it difficult to book an. airline ticket over the phone.
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