1．Tom had his hair cut and was wearing a very cool Tshirt, so I didn't r________ him when he passed by.
2．Everyone of us should think of how to r________ the pollution and how to protect the environment.
3．Some teenagers became addicted to surfing the Internet, which seriously a________ their studies.
4．We were deeply a________ by the news of her death.
5．Smoking is b________ in public.
