—Mum you should have taken me to the park this morning.—I had planned to but I couldn't

问题补充：

—Mum, you should have taken me to the park this morning.

—I had planned to, but I couldn afford the time.I a lecture.

A. had given

B. gave

C. was giving

D. would give

答案：

A. had given

B. gave

(答案→)C. was giving

D. would give

解析：考查动词时态。句意：——妈妈，今早你本应该带我去公园的。——我原本计划是这样的，但是我没能抽出时间，当时我在做演讲。根据语境可知，表示过去某一时间正在进行的动作，故用过去进行时。