The news shocked the public,________ to great concern about students’ safety at school．

    A．having led      B．led         C．leading          D．to lead

Only through _______ talks can we build trust and only through cooperation can we create ________ win-win economic situation．

    A．\ ; a       B． the ; the           C． \ ; the         D． the ; a

----He is fluent in English because he once stayed in London ．

  ---- Really ? How long _________ there ?

    A．did he live      B．has he lived         C．had he lived    D．does he live

---Can those _________ at the back of the classroom hear me ?

    A．seat             B．sit              C．seated                   D．sat 

The lost car of the Lees was found ___________ in the woods off the highway．

    A．abolished        B．abandoned        C． resisted        D．rejected

Written in a hurry , _____________． Which one of the following is right ?

    A．they found many mistakes in the report                 B．Sam made lots of mistakes in the report

    C．there are plenty of mistakes in the report  D．the report is full of mistakes

--Sorry, I have to _________ now． It is time for class．

   --- OK, I’ll call back later．

    A． hang up         B．break up         C．give up          D． hold up

It’s uncertain _______ side effect the medicine will bring about , although about two thousand patients have taken it ．

    A．that             B． what            C． how            D． whether

He insisted what he did _______ right and that anyone who broke laws ________．

    A．was ; be punished                    B． be ; was punished

    C．was; was punished                    D．be ; be punished        

He has little acquaintance _______ music , while he has a wide knowledge ____ painting．

    A． with ; of       B． of ; about     C． with ; about    D．of ; of