来自曹辉的问题
【IfMr．Dewey_____present，hewouldhaveofferedanypossibleassistancetothepeoplethere．（）A.wereB.hadbeenC.shouldbeD.was】
If Mr．Dewey _____ present，he would have offered any possible assistance tothe people there．（）
A.were
B.had been
C.should be
D.was
