John will refuse to take part in this activity with Kate she says sorry to him.

My name ____ Jack. Liu Ying and Sun Mei ____ my friends.

What do you know about Russia—-So far as I know, it is _______theUnited Kingdom.

Uber (优步) is the easiest way to connect you with a driver_________ the tap of a button. In terms of price and convenience, it is second _________ none.

ular attention must be paid ______ welfare,especially in the poor area.