You have to ________a mobile phone so that they can call you

You have to ________a mobile phone so that they can call you at any time
A.get B.marry C.store D.sell
The man stood with his hands in his_______
A.drawer B.hair C.books D.pockets
I was late for class because my clock didn‘t______this morning.
A.break off B.go off C.put off D.turn off
Though Zhang Yuehua and Aiqi don't do anything unusual,________ of them are our heroes.
A.both B.neither C.all D.none