问题
选择题
Today Xiao Li is absent ___the class. He ___ ill.
A．for; could have been
B．with; should have been
C．at; could have been
D．from; may have been
答案
答案：D
第一空为固定短语：be absent from 缺席，不在，第二空考查情态动词表推测的用法，对过去可能性的推测用may have done，所以选D。