The smile on his face makes him _______really ______.

Everyone in this country should work hard and do what they can _____ against national smog.

It was never clear _______ the man hadn’t reported the accident sooner.

r Robert has gone to HarvardUniversity for his master’s degree. — Oh, how nice! Do you know when he ____

No one in the department but Tom and I _____ that the director is going to resign