---- 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
网友回答
A. would like to
B. will
(答案→)C. was to have
D. was going to join
解析：本题考查时态。从上下文来看，询问的是过去发生的事情，因此先排除B。根据句意“他本来要来的，但碰巧病了”，was/were to have done表示计划、安排要做的事，而实际上并没有做，再看D，过去进行时表示的是过去即将发生的事，A如果是would like to have也就对了。表示“碰巧”的句型：sb. happens to do… = It happens that sb….