Don’t leave the chairs about, or you may ______ them at night.

I hope there will be ___people and _______pollution inthe future. Then our lives will be better.

“ exercise every day, my son. It’s good for your health. ”Dad often said to him.

rk, ________ I visited last year, isa nice old city．

Ilike getting up very early in summer The morning air is so good ______