My parents live in a small village. They always keep candles in the house ___ there is a power cut.

There is still much to discuss；________，we shall return to this topic at the next meeting.

. It is uncertain __ side effect the medicine will bring about, although about two thousand patients have taken it.

—Children must have access to good books.—I can't agree more. Reading is to the mind ________ food is to the body.

—Don't you think it too expensive?—Never mind ________ the price is; if it is what we need we'll buy it.