We like Mr Wu because he sometimes _________ us interesting stories in his class.
Recycling is one way to protect the environment,reusing is.
— I’m too tired to go any further. —_______! I’m sure you can make it.
— Excuse me, is this seat taken? —_____. That man got his books and left a few minutes ago.
—Has your friend completed his design? —Not yet. He _______ on it last night.
—Do you know ______? —To meet her friends from America.