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
I would rather you ____with us yesterday, but you left．
A．had stayed? B．stay C．stayed D．have stayed
