The telephone rang when wedinner.A. hadB. haveC. are havingD. were having

问题补充：

The telephone rang when wedinner.

A. had

B. have

C. are having

D. were having

答案：

A. had

B. have

C. are having

(答案→)D. were having

解析：本题的含义为电话铃响的时候，我们正在吃饭，本题中的从句表示过去正在进行，使用过去进行时，结构为was或were+现在分词，故本题选D。