【题目】If Mr. Dewey _____ present, he would have offered any possible assistance to the people there.
A.were
B.had been
C.should be
D.was

【答案】B
【解析】句意：如果Dewey先生在场的话，他会提供那里人们的任何可能的帮助。本题考查的是if条件从句与过去事实相反的虚拟语气，故从句用had + v-ed，主句用would / could/ should / might + v-ed。故B正确。