Sandy likes playing _______ badminton after _______dinner.

下列对联，搭配最恰当的一项是（ ）

At that time, education _____ white settlers only and few black people had the chance to go to school.

The teacher always tells us to stay ________ and obey the guidance if we hear the fire alarm.

To put his wife _____ and to guarantee a promise of top secrecy, a husband may claim that alife-threatening assignment is just a business trip.[ ]