A carried out B can carry outC has carried out D carry out
热心网友
选D.应为 (should) carry out,此处将should省略掉。
热心网友
B,虚拟语气用can\could\should表示。
热心网友
agree with 臭脑袋
热心网友
C把 desire 理解为 hope 就可以。desire 后面没必要是虚拟语气。例如在词典里有这样的例句：They desire that you will come at once。注意这里是will，不是should。
热心网友
A，这句是虚拟语气 It is desired ...