求助~~几道本月的语法JJ~~

11. Schistosomiasis, a disease caused by a parasitic worm, has been enlarged by the habitat of the freshwater snails that are the parasite’s hosts during part of its life cycle.
                

A) the freshwater snails that are the parasite’s hosts during part of its life cycle.

B) freshwater snails which become the parasite’s hosts during part of its life cycles.

C) freshwater snails which become the parasite’s hosts during part of their life cycles.

D) Snails that become the hosts of parasite during the parasite’s life cycles.

A)     during

B)     of the

C)   what

D)     concerning…

GWD 2-33

When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position.

A.    When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position.

B.     Whenever an active tooth is lost or worn down, many spare teeth lie in seemingly limitless reserve in the shark’s jaws, which are each ready to slide into the appropriate position.

C.     Many spare teeth lie in seemingly limitless reserve in the shark’s jaws, each one of which are ready to slide into the appropriate position when an active tooth is lost or worn down.

D.    The many spare teeth lying in seemingly limitless reserve in the shark’s jaws, each one of which is ready to slide into the appropriate position whenever an active tooth is lost or worn down.

E.     In the shark’s jaws, many spare teeth lie in seemingly limitless reserve, each one ready to slide into the appropriate position whenever an active tooth is lost or worn down.

马上要考试啦~~几道这个月的语法JJ, 请大家帮帮看看, 统一一下答案~!!谢谢

11. Schistosomiasis, a disease caused by a parasitic worm, has been enlarged by the habitat of the freshwater snails that are the parasite’s hosts during part of its life cycle.
                

A) the freshwater snails that are the parasite’s hosts during part of its life cycle.

B) freshwater snails which become the parasite’s hosts during part of its life cycles.

C) freshwater snails which become the parasite’s hosts during part of their life cycles.
            

D) Snails that become the hosts of parasite during the parasite’s life cycles.

 12. According to the information provided by police and fire department, the city council proposed to have the alarm system installed given problems during public vehicles accessibility.

A)     during

B)     of the
            

C)   what

D)     concerning…

GWD 2-33

When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position.

A.    When an active tooth in the shark’s jaws is lost or worn down, many spare teeth lie in seemingly limitless reserve, each of which are ready to slide into the appropriate position.

B.     Whenever an active tooth is lost or worn down, many spare teeth lie in seemingly limitless reserve in the shark’s jaws, which are each ready to slide into the appropriate position.

C.     Many spare teeth lie in seemingly limitless reserve in the shark’s jaws, each one of which are ready to slide into the appropriate position when an active tooth is lost or worn down.

D.    The many spare teeth lying in seemingly limitless reserve in the shark’s jaws, each one of which is ready to slide into the appropriate position whenever an active tooth is lost or worn down.

E.     In the shark’s jaws, many spare teeth lie in seemingly limitless reserve, each one ready to slide into the appropriate position whenever an active tooth is lost or worn down.