Lots of people in our city __________ the old and the disabled. They usually offer their seats to them on buses or help them cross the road.
Cindy is always helpul. She only thinks of others and does not_____herself.
— Jim, what did I say just now? — Sorry, I ______ of something else.
The boy looked __________ because he didn’t pass his maths test.
I think there will be _____ people and ______pollution.
-- Must I do my homework right away? -- No, you _____. You_____ do it later.