I like penguins because they are ______ interesting.

ently read that it’s good to walk a lot; ______, I’m getting off the bus a few stops early and walking the rest of the way.

This is _____ pen and ________ is in the pencil-case.

you and your sister sing English songs—No, we can ‘ t .

Our teacher often keeps us ______ classroom every day, so we must keep our classroom_______.