问题
选择题
—He should have come to join in the thorough cleaning.
—He _____. I don’t think it was his turn.
A．needn’t have to
B．needn’t have
C．didn’t have to
D．doesn’t need to
答案
答案：C
题目分析：考查情态动词：句意：--他本应该参加大扫除的。--他不必，我想没有轮到他。A。needn’t have to表达不对，B.needn’t have是本不必做而做了，和句意不符合，D是现在不必，而这句话表示过去不必要，选C。