﹣Hi，you walk on the grass．
﹣Sorry，I do it again．（ ）
A．can't，willB．needn't，won't
C．mustn't，won't
The passengers _______ show their ID cards before getting on the plane．（ ）
A．mightB．mustC．could
Her birthday is ______ winter，the most beautiful season in a year．（ ）
A．inB．atC．on
The twins are in different classes．One is in Class One and ______ is in Class Two．（ ）
A．anotherB．otherC．the other
The Chinese team are working hard ________ honors in the 2016 Olympic Games．（ ）
A．to winB．winC．winning
Now smart phones _______ in many ways in our daily life．（ ）
A．are usedB．is usedC．are using