“ exercise every day, my son. It’s good for your health. ”Dad often said to him.
Tom usually gets up _____ half past six _____ Saturday morning.
Mr Green is our new teacher this term. He teaches _____ history.
We must protect (保护) animals like elephants, because they’re _____.
There are _____ teachers in our school.
When we go to the library, we must be _____ in the library.