Recently quite a lot of experts that another law on wildlife protection as soon as poss

问题补充：

Recently quite a lot of experts that another law on wildlife protection as soon as possible.

A. suggested; must be passed

B. have suggested; be passed

C. were suggesting; was passed

D. suggested; being passed

答案：

A. suggested; must be passed

(答案→)B. have suggested; be passed

C. were suggesting; was passed

D. suggested; being passed

解析：suggest表示“建议”之意时，宾语从句用shoud+动词原形进行虚拟，should可以省略。句意：近来，许多专家建议应尽快通过关于野生动物保护的又一项法规。