Question

Today Xiao Li is absent ___the class. He ___ ill

1. A.
   for; could have been
2. B.
   with; should have been
3. C.
   at; could have been
4. D.
   from; may have been

Answer 1

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。