You have worked so hard---you’re to pass the exam.A. boundB. addictedC. accustomedD. devo

问题补充：

You have worked so hard---you’re to pass the exam.

A. bound

B. addicted

C. accustomed

D. devoted

答案：

(答案→)A. bound

B. addicted

C. accustomed

D. devoted

解析：考查固定搭配。Be bound to do sth一定会做某事；本题其余三个选项都是和介词to连用的，后面都要接动名词或者名词的形式。句意：你学习如此认真，你一定能够通过考试的。故A正确。