—Mr. Li ______ to Mary carefully when I entered the classroom this morning. —He is very patient ______ he is young.
What_____just now?
Don't eat _____meat, or you'll be _____ fat.
Mr. Green will have ____ holiday very soon.
When did your father_____ your mother?
---I called you yesterday evening, but there was no answer. ----- Oh, I’m sorry. I _____ dinner at a restaurant at that time.