--- My son seldom has breakfast.--- It is unhealthy habit. You must ask him to change it.
.He lives_______in the______village, but he is never_______.
Pollution is a serious problem. Scientists have _______ some good ways to save it.
We can’t put off _____ a plan .
I saw him when I passed by.
Some people plan to ______ a volunteer project to help the disabled children.