完成句子。
1. I _____ (很高兴)at the news.
2. I often_________ (听到有人用英语唱这首歌)．
3. ______ (由于伤得严重),he had to be taken to the hospital.
4. The child soon fell asleep,________ (由于路途劳累)．
5. _______ (从山上看),the park looks very beautiful.
6. The hunter walked slowly in the forest,_________ (后面跟着他的狗)．
7. Look! Many students are collecting________ (落叶)．
8 . ______ (由于抽烟太多),he has suffered from lung cancer.
9.________ (不知道如何解这道题),1 went to my teacher for help.
10. He lay on the grass,_______(长时间地望着天空)．