在森林游玩时不能乱丢矿泉水瓶,一旦瓶内进水后相当于 镜,对光线有 作用.
To my disappointment, the new movie is so (meaning).
Most people don't like (rain) days because they make people feel sad.
The worried mother is looking forward to (hear) from her daughter.
After New China was (found), people lived a happy life.
Seeing is (believe).