You have to keep alert when you are in the supermarket; otherwise, you might _____ what you actually don’t need at all.
— Would you mind giving me a lift home, Bill? — ______I'll wait for you at the gate after work.
It took people as well as time to build the pyramid.
They took the injured straight to the hospital, otherwise he .
When he is awake, he always keeps his eyes on the ceiling.
and class began.