On his way home, he found a wallet ______ on the ground.[ ]

Collier once said, “A singleidea—the sudden flash of a thought — __________be worth a million dollars.”

May Day is coming. Don’t forget to give my regards to your parents.—–_____. Many thanks.

The boy is so naughty that he never hismother.

Mr. Smith was ________ UNICEF officer. He came to the village and changed the poor girl’s life.