请根据句意或括号中的中文提示、英文释义，写出句中所缺单词，使句子通顺。
I was good at all the ________________ except physics when I was at school. I still think it is difficult now.
As a host, she has many duties, but her main job is to _________ (介绍) the pop stars.
Don’t run _____________ (穿过)the road when the traffic lights are red. It’s dangerous.
Nowadays, some people become ___________ (unable to hear at all) because of noise pollution.
Most students feel ________ (tired and unable to relax) and angry from time to time because their parents are strict with them.