He made a mistake, but then he took action to change the situation ________ it got worse.
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.