问题
选择题
Mr. White asked his students________ to meet some Chinese friends from Shanghai.
A．if were they pleased
B．if they are pleased
C．if are they pleased
D．if they were pleased
答案
答案：D
本题ask后跟的是一个从句用正常的顺序，故不选AC，主语的动词是过去式，所以从句也应该用过去，故本题选D。