28.Computers,_______have many uses, cannot completely take the place of humans.
A.that B.though C.which D.as
答案C 我选B
31.Ladies and gentlemen, please remain_______until the plane has come the a complete stop.
A.seated B.seating C.to seat D.seat
答案A 我选B
33. _______to take this adventure course will certainly learn a lot of skills.
A.Brave enough students B.Enough brave students C.Students enough brave D.Students brave enough
答案D 我选C
35.The job will be offered to_______is capable of performing it well.
who B.whoever C.no matter who D.anyone
答案B 我选D
36. Who should be responsible for the accident?
The boss,not the workers.They just carride out the order_______.
A.as are told B.as told C.as telling D.as they told
答案B 我选A
38.At an Expo-themed forum in Shanghai`s Yangpu District, Governments were also urged_______a good job in protecting local old buildings and culture while pursuing social and economic development.
A.doing B.having done C.to be done D.to do
答案D 我选B
40.With Internet use_______in the world,companies like Yahoo and Google are hunting harder for deals.
A.exploded B.having exploded C.being exploded D.exploding
答案D 我选C
谢谢帮我回答一下具体的语法点和排他过程~~