We can not live without air and water. 没有空气和水，我们无法生存。
Honesty is the best policy. 诚实为上策。
Beauty is in the eye of the beholder. 情人眼里出西施。
I've got two pieces of baggage/luggage. 我有两件行李。
Suddenly, I had a fit of coughing and couldn't speak.
I'd like a pot of tea, and two pieces/slices of toast with strawberry jam.