1.Careful surveys have indicated that as many as 50 percent of patients do not take drugs _____ directed.
A.like B. so C.which D. as
2.This ticket _____ you to a free meal in our new restaurant.
A.gives B. grants C.entitles D. credits
3.You _____ her in her office last Friday;she's been out of town for two weeks.
A. needn't have seen B. must have seen C.might have seen D. can't have seen
4.That was so serious a matter that I had no choice but _____ the police.
A. called in B. calling in C. call in D. to call in
5.She was so _____ in her job that she didn't hear anybody knocking at the door.
A.attracted B. absorbed C.drawn D. concentrated