一What do you think of Martin ?一He is the boy in our class.He answers many questions and has created three clubs
Don't make your children ________ for hours reading books in ________ a dark room.
She_______her little sister every morning after she gets up..
------Your grandpa had a bad cold last week. ------_____________.
What ________ if there ______ no water or air on the earth?
The teacher said the earth ________around the sun.