--Excuse me, sir. Look at the sign on the wall “NO ____”. --Oh, I’m sorry. I’ll never do it again.
When _________ our national flag _______, we feel our hearts full of pride and strength.
Since the time humankind started gardening, we __ to make our environment more beautiful.
All the books donated by the students from urban schools are said ________ to the students in the earthquake-stricken areas the other day.
We got near a garden, _________ owner sitting in it .
To tell you the truth, I think it is you, ________Mr. Smith, ________.