Our teacher often keeps us ______ classroom every day, so we must keep our classroom_______.
I think English is ______ useful language, and it’s also ______ important language.
— Can you help me? — Sure. What would you like me ?
Turn on the TV and there is _________.
Every year, ______ people go to visit the factory.
--Dane, your keys are under the bed. You Should ____________. --OK, mum.