The more you smile, the ___________ you will feel.

He went there as a volunteer on a ________ program.

Please give me my glasses. I can ________ read the words in the newspaper.

--Have you cleaned out the refrigerator _______? ---Yes, I have done it ________. But I haven’t taken out the rubbish ________.

Millie often goes to school by bus but ________her mother drives her to school.