It is strongly recommended that the machines ________ every year.
A ． check B ． be checked C ． checked D ． checking
B
【详解】考查虚拟语气。句意：强烈建议机器每年进行一次检查。 It is strongly recommended that... 强烈建议 …… ，从句用 should + 动词原形的虚拟语气， should 可以省略。主语 the machines 与 check 之间为被动关系，所以用被动语态。故选 B 。
Would you consider lying to a good friend to avoid ____ your friend’s feelings？If so, what kinds of things would you lie about?
A. hurting B. to hurt C. being hurt D. hurt