7. Put your heart into it, and you're sure to be ____(成功) in the future.
6. ____(幸运的是), they found their lost child with the help of the police.
5. I didn't come here yesterday. I came here s____to see you.
4. −−−I'm sorry. I'm late.
−−−You are s____to be here earlier.
3. My father e____every day, so he is very healthy.
2. −−−How about your work?
−−− Just making thousands of paper boxes by hand every day. This uninteresting work almost turns me into a man like a m____.
1. Many t____of trees are planted to protect the environment each year.