1．Most people ________ (现今) know the importance of a healthy diet．
答案：nowadays
2．The ________ (志愿者) for community service are doing a good job．
答案：volunteers
3．He felt his breathing was slow and ________ (不规则的) after running a long way．
答案：irregular
4．Teachers will never be ________ (取代) by computers in the classroom．
答案：replaced
5．Which country is going to ________ (主办) the next World Cup?
答案：host
6．They discovered many a________ china teacups in this tomb．
答案：ancient
