单选题 7. "Alice, why didn't you come yesterday? I tried to look for you."
"I ______, but I had an unexpected visitor."

A、 had
B、 will
C、 was going to
D、 did

【正确答案】 C

【答案解析】[考点] 动词时态
根据对话时态以及句意可知，答句应用过去将来时。be going to do sth. 表示计划、打算做某事。答句的完整表达为“I was going to go yesterday, but I had an unexpected visitor”。
“爱丽丝，你昨天怎么没来啊?我试图找你呢。”