The more ______ we take the safety standards, the further we can speed up the development of the school bus industry.
—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.
Sorry I'm late. I _____ have turned off the alarm clock and gone back to sleep again.