All of the preparations for the lask ------been completed an

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/21 12:56:56

All of the preparations for the lask ------been completed and we're ready to start.
All of the preparations for the task ------been completed and we're ready to start.
A.have B.has C.had 理由,应选什么,选B,好不好,为什么

A
B和A只是个单复数的区别,句子主语是preparations,是复数,从此,谓语也应用复数形式
C项用了过去完成时,而从句子的后半句看,是现在时态,所以只能选A

All of the preparations for the lask ------been completed an All of the preparation for the lask ------been completed and Shut down the computer after all work has been completed all the preparations for the task__i"m ready to start(to com all the preparations for the task___,and we are ready to sta All the preparations for the task ____,we were ready to star All the preparations for the task _____,and we're ready to s All the preparations for the project ______,we’re ready to s All the preparations for the task ________ and we’re ready.t i'm afraid all the preparations we have made were for ___bec 短文改错,求讲解He always made good preparations for the lessons,（an shut down the computer after all work has been completed是什么意