To those_______ in martial arts(武术), the period from 1972 to 1975 is often said_______the Bruce Lee era.

d a drinkI’m really thirsty-_______Let,s have one

Now most teenagers write to each other not by letter ________online.–Yes, the Internet has become a part of their life.

On the dark street, there were no people around _____ she could turn for help.[ ]

The box is ________ heavy _________ I can’t carry it.