15. Whom was it up to ________ the matter?

A. decide　　　　　 B. to decide　　　　 C. deciding　　　　　 D. decided

14. He invited us to his birthday party but if she doesn’t go today, ________?

A. nor do I　　　　　　 B. neither do I　　　 C. nor shall I　　　　　 D. neither I shall

13. ______ his arrival, John was given a warm welcome by the local people.

A. For　　　　　 B. At　　　　　　 C. On　　　　　　 D. In

12. ______ your proposal, I’m pleased to inform you that most committee members consider it acceptable.

A. Considering高。考。资。源。网B. 　 Regarding　　　　　　　 C. Seeing　　　　　　　　　　 D. Supposing