问题
选择题
22. 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
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22. 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：A