---Couldn't you leave a message for him?---Yes but I need something I can write a note. A.

问题补充：

---Couldn you leave a message for him?

---Yes,but I need something I can write a note.

A. which

B. that

C. when

D. where

答案：

A. which

B. that

C. when

(答案→)D. where

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