- The reason_________ he didn't come was _________ he had to take care of his sick mother.
| A．why; that | B．why; which |
| C．which; why | D．that; for |
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 |
—Remember the first time we met?
—Sure．You ____in the supermarket．
| A．shopped | B．have shopped | C．had shopped | D．were shopping |