Every exercise in the book (design) ______ to build up your reasoning skills.

admin2010-04-03  20

问题 Every exercise in the book (design) ______ to build up your reasoning skills.

选项

答案is/was designed

解析 本题考查动词被动语态的用法。动词design和主语every exercise之间是被动关系,所以需要用动词的被动式be designed;又因为主语是单数,所以用is/was designed。
转载请注明原文地址:https://kaotiyun.com/show/C1lK777K
0

最新回复(0)