It is generally considered that a taxi driver ought to be quite familiar ________ the streets in the city.[ ]

Why does the lake smellterrible—Because large quantities of water ______.

Saying “hello” to somebody today can _____ a new friend tomorrow.

here anything wrong. Bob You look sad.—Oh, nothing much. In fact, I ______ of my friends back home.

I didn’t go to class last night because my car broke down. — You _______ mine. I wasn’t using it.