We should never till tomorrow what we can do today .
Recycling is good, so don't ______ bottles or newspapers.
Many students ______ changes to show themselves in class because the class size is too big.
--Mr. Li will check our homework this afternoon. ______ you _______ it?--Not yet. I'm doing it right now.
There will be _______ jobs for people because some robots will do the same jobs as people.
-- Why don't you join us for breakfast? -- Sure! ______