Question

— Tom, did Mr. Li join you in your discussion?
— No, he＿＿, but he happened to have fallen ill.

A．would like to

B．will

C．was to have

D．was going to join

Answer 1

C

C项是was to have joined us in our discussion 的省略形式。was／were ＋ to have done表示原来计划、安排要做的事，而实际上并没有做。