Monitor, is ________ in the classroom— No, Lily is out.

The price of oil is much _____________ than before so that many people go to work by bus instead．

It is required that each restaurant have signs on the walls,saying “ _____ your steps!”.

What did your father ask you just now—He asked me ______.

The English exam is not difficult, is it?　 — _____. Even Tom _____ to the top students failed in it.　[ ]