1.None
is so blind as those who ____ see.
A.don't. ? ? ? ?B.can't. ? ? ? ?C.won't. ? ? ? ?D.mustn't?
C,B?
2.Hens an energetic man and has always done more than ___.
A.being required. ? ? ? B.it is required. ? ?C.is required ? ? ?D.he required?
C,b?
3.--Who would you like to undertake the project?
--A man _____Wilson.
A.called himself. ? ?B.calling him. ? ?C.is called. ? ?D.you call?
D
4.They had good discipline and did only what had _____.
A.to do. ? ? ?B.to be done. ? ? ? C.done. ? ? ?D.been done
B
5.The biological and chemical weapons are the greatest threats___mankind.
A.facing. ? ? B. Faced with. ? ?C.faced. ? ? D.facing with?
A
问号忽略~~~~求解释