How the big forest fire has ________ remains to be a mystery.
—What attracted you to our university?—You have a great basketball team and I can ________ for it.
The two countries agreed to ________ their differences and work together for peace, which has a positive effect on the international situation.
A good speaker is supposed to manage to ________ the listeners what he means.
He will have to find some other work, for he can't ________ this loud noise any more.
New computers are soon out of date since newer models are ________ constantly.