Years ago we didn’t know this but recent science______that people who don’t sleep well soon get il

This book gives a good picture of life in China 100 hundred years ago.（英译中)

I know a little bit about France as my wife and I ______there several years ago.A、are

UFOsSixty years ago, a man named Kenneth Arnold saw something that we can still （51) today

We didn’t know his telephone number, otherwise we ________ him.A) would have teleph

Ever since we moved to South Florida two years ago, we______fresh clean air.A．had been enj

Economically speaking are we better off than we were ten years ago? Twenty years ago?