21、The museum     we are going to visit is far form our school.

              A．where             B．that                C．it                    D．as

       22、It is getting hotter and hotter in Wuhan,      is usual.

              A．and                B．it                   C．as                   D．that

      23、We will never forget the days    we spent happily together in the mountain village.

              A．when              B．which             C．where             D．on which

       24、Which of the two sheep    you keep produces more milk?

              A．that                B．which             C．what        D．they

      25、    is known to all, Lu Xun was famous     a great thinker.

              A．Which; for    B．As; for           C．It; as              D．As ; as

21、B  22、C  23、B  24、A
 25、D