—— Tom, did Mr.Li join you in your dicussion?
—— No, he＿＿＿＿, but he happened to have fallen ill.
A. would like to
B. will
C. was to have
D. was going to join
网友回答
A. would like to
B. will
(答案→)C. was to have
D. was going to join
解析：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。