It is believed that a new kind of drug ______ by the scientists and they are hopeful that they will succeed in a few months.
—I hear you've got a set of valuable Australian coins. ___I have a look? —Yes, certainly.
—Is John coming by train? —He should, but he _ not. He likes driving his car.
I told Sally how to get here, but perhaps I _________ for her.
I was really anxious about you. You _home without a word.
My sister met him at the Grand Theater yesterday afternoon, so he ____ your lecture.