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