March is a Civility month(文明礼貌月) in China. More and more young people are trying to do all they can ________ the elderly.
Tom’s uncle knows computers well, and he __________ a computer engineer .
— Do you think Jim will be the new chairperson this term? — ____________. He is so selfish (自私).
The rich man __________ much food__________ the poor families during the hard time.
If Simon ________ hard, he _________better results in English.
I think math is not ________ science.