Question

He did not regret saying what he did but felt that he ________ it differently.

A．could express	B．would express
C．could have expressed	D．must have expressed

Answer 1

C

掌握情态动词的完成结构的用法是解此题的关键，could express过去能够表达；would express(过去)将要表达；could have expressed本来能够表达；must have expressed(表推测)肯定能表达。