28．I know who he is，                  I've never spoken to him before．

A．and                     B．but                      C．so                          D．or

27．Zhaozhou Bridge is made of stone．It                   about l,400 years ago．

A．built                    B．has built              C．has been built         D．was built

26．You can call me               Saturday morning．I'll be at home then．

A．in                       B．on                       C．at                          D．of

25．Mr. Wu is away on holiday．He             to Shanghai．

A．has gone              B．has been              C．goes                      D．will go

24．--I got up late this morning，so I                   the early bus．

--What a pity!

A．caught                 B．failed                         C．missed                   D．took

23．He is very lazy．He doesn't do                housework at home．

A．some                   B．any                     C．a few                     D．many

22．My cousin works in a restaurant．He is              cook．

A．a                         B．an                       C．the                        D．不填

21．--Hello，may I speak to Mary please?

       --              ．

A．I'm Mary．                                             B．Yes，please．

C．Who are you?                                             D．Hold on，please．