Good morning, class. Today ____ are going to learn a new unit, Unit 12.

Bill wasn’t happy about the delay of the report by Jason, and ___________.

Mum, I can’t find my new pen.—Don’t worry. It ____________in one of your pockets.

During the period of recent terrorist activities, people _____ not to touch and unattended bag.

Is this your sister’s key, John？ —No, it isn’t. ______ is in the bag.