Mr. Barret doesn’t think that all bad language should be allowed. In his opinion, there are ______ that should be kept up.
—Alice, you look puzzled.Haven’t you understood it? —Yes.I _____of another problem just now.
By looking at a problem in as many ways as possible, creative thinkers can find solutions that would _______ remain invisible.
—What do you think of the performance today? —Great! but a musical genius could perform so successfully.
Get out of here at once. _________ not, I’ll phone the police.
she is not so cheerful she used to be?