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

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

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

    A. being held     B. to hold           C. holding           D. having held

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

1. A.
   holding
2. B.
   to hold
3. C.
   held
4. D.
   having held

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

    A. being held     B. to hold           C. holding           D. having held

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

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

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

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

　 A．being held　　 B．to hold　 C．holding　　 D．having held

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

    A. holding         B. hold                 C. held                D. being held