This new model of car is so expensive that it is the reach of those with average incomes[ ]

I’ll be free ___ seven o’clock

. —Li Ping often watches _______ English TV news in her spare time.—No wonder she has _______ command of English.

．Walking together, my father and I used to have a lot of conversations I __________learned lessons from his experience.

We all have two ears and one mouth so we can listen _____we speak.