高一英语正确词语填空

高一英语正确词语填空
选择正确的词语填空
1、Actually,___ (two third;two thirds) of the land in africa ___ (is;are) not covered with sand.
2、What I said just now ___ (was;were) totally based on a resent survey.
3、The teacher told the parents that all the means they knew ___ (have been tried;had been tried) to stop students from smoking at school since last term.
4、As we all know that early to bed and early to rise ___ (make;makes) a person healthy.