The students expected there ____more reviewing classes before the final exams.

—What are you doing outside the class? Didn’t you hear the clock ______? —Sorry, sir. I ______.

She is believed______  the train, otherwise she would have arrived here by now.   

_______ with so many challenges, Yang Guang, a blind young fellow, didn’t give up; he made great efforts to win success.

You will see this product made in this factory _____ wherever you go.