Was it the conference of APEC that made Shanghai the focus of the world then?A. holdingB.

问题补充：

Was it the conference of APEC that made Shanghai the focus of the world then?

A. holding

B. to hold

C. held

D. having held

答案：

(答案→)A. holding

B. to hold

C. held

D. having held

解析：holding the conference of APEC是动名词作主语，在强调句型中属于被强调部分。

【标签】动名词用法