﹣Time is up．I have to go now．
﹣Oh，it s raining heavily outside．You'd better wait here_____it stops．（ ）
A．untilB．whileC．since
His grandparents are used in the morning．（ ）
A．to exerciseB．to exercising
C．exercise
cold weather it is!（ ）
A．How aB．What aC．What
There a pencil and some pens in the box．（ ）
A．isB．areC．aren't
They could look after when they were six．（ ）
A．ourselvesB．themselvesC．yourselves
﹣Do you know in class？
﹣Sorry，I didn't go to school，either．（ ）
A．what he saidB．what did he say
C．what he says