When did Prince William and Kate get married?— They ______ for about two years.

Mum, my little sister is crying all the time. —Mary, be! She feels sick. You should take good care of her.

Do you know(认识) that girl?—Yes. _____ name is Mary.

How long do you usually _____on your homework everyday?

Should people stop using their cars and start using public transport?— __________. The roads are too crowded as it is.