(   )1. They preferto.

      A. swim run                            B. swimming run                  C. swimming running

(   )2. I like musicis quiet and gentle.

      A.who                             B. that                                 C. whose

(   )3.He is the teacheris friendly to us.

      A. who                                   B. which                      C. whose

(   )4.Mum, please remindmy book.

      A. me of                                 B. me to                              C. me with