Mary often does some translation work to earn extra money, which______half of her income. (潍坊市)

The problem of air pollution is becoming more serious ______ the increasing number of cars

________ will the dinner be ready, Mum—Ten more minutes.

Life is all about choices. It’s your choice_______ you live a life.— I quite agree. It’ you that choose to be in a goodmood or bad mood.

The robot needs _______ once a month. And we will check it for you for free.