Do you know the boy is drawing a picture over there?( )
A.whomB.whatC.whoseD.who
The gravity on Mars is only about there eighths of ___________on the Earth.
A.thatB.thoseC.oneD.ones
Peter has ________ memory and often forgets the names of people round him.
A.longB.goodC.richD.poor
I know how busy you are and naturally I wouldn't take ________ too much of your time.
A.offB.upC.onD.down
According to the new traffic rules,people ___________ wear a helmet when riding an e﹣bike.
A.mightB.mayC.canD.must
Football fans are often called the "12th man" because of their influence ______a team.
A.toB.fromC.onD.at