1. (2012·¼ÃÄþ¸ßÒ»¼ì²â)In our school library there _______ a number of books on science and the number of them_______ growing larger and larger.

A. is£»are                    B. are£» is                  C. has£»is                     D. have£»are

2. (2012·³É¶¼¸ßÒ»¼ì²â)Please remain _______ until the plane has come to a complete stop.

A. to be seated                                   B. to seat

C. seating                                          D. seated