What I wanted to know was when and where the meeting.A. was holdingB. had heldC. was to ho

问题补充：

What I wanted to know was when and where the meeting.

A. was holding

B. had held

C. was to hold

D. was to be held

答案：

A. was holding

B. had held

C. was to hold

(答案→)D. was to be held

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