He regards that book _____ one of the worst that he’s _____ read.
| A．to be, ever | B．to be, never |
| C．as, ever | D．as, never |
China’s economic development has made rapid progress in the past years and young people have made great contribution to this progress.
| A．/ ; a | B．the; / | C．a; a | D．/ ; / |
It's said that going to bed early and getting up early ____a widely accepted good habit．
| A．are | B．is | C．were | D．was |
____is known to us is that China has won five gold medals in the 2010 Winter Olympic Games.
| A．It | B．As | C．What | D．That |
Medicine should be placed ____children’s reach to make sure of safety．
| A．with | B．within | C．out | D．beyond |
—I finished all my work today．
—If____, you can help others with their work．
| A．so | B．not | C．possible | D．ever |