_____ teaching in a university, he also spent some time teaching in a night school.
---Have the papers been graded? --- Yes, but I regret that you failed it.
My cousin is a person __________ I can discuss my problems.
. Nowadays online games _______ teenagers.
---What do you ______ the waste bottles?---We can sell them instead of throwing them away.
Only thirty per cent of ______ parents say that they know what their children like to do after _____ school.