Haven’t I told you that you __________ have the answer tomorrow morning?
----Four dollars a pair? I think it’s a bit too much.----If you buy three pairs, the price for each will_____to three fifty.
Our English teacher has a _____ teaching method.
_____it is 7 o’clock, we must go now.
The question is _____easy, so everyone in our class can answer it.
Our lab is on the third _____ of a six—______ building.