A) To                B) In                C) For                D) Among

　　12. On Halloween, if adults don't give children candies, children can play tricks ________ them.

　　A) with    B) for    C) on    D) of

　　13. Our family celebrated Thanksgiving Day_______ November 28th, 2014.

　　A) for    B) at    C) in     D) on

　　14. _______ my opinion, kids should learn to do some housework .

　　A) On    B) In    C) Of    D) With

　　15.    They discussed ________ about two hours, and then elected Tom as the chief editor.

　　A) from    B) in    C) for    D) with

　　16.    The manager can’t attend the meeting because he has gone to Beijing ________ business.

　　A) to    B) in    C) at    D) on

　　17.    You’d better take an active part in sports, ________ you can’t lose weight.

　　A) so    B) for    C) or    D) but

　　18. She told me they arrived in Shanghai ______ the evening of October 20th.

　　A) on               B) in                    C) to                   D) at

　　19. You can always see people exercise in that park, even ________ cold winter mornings.

　　A) on                   B) in                C) at             D) from

　　20. The 2014 APEC was held in Beijing _________ November.

　　A) on               B) at                C) by              D) in