Question

The advertisements________on the wall are designed by my sister.

A．are put up

B．are putting up

C．put up

D．be put up

Answer 1

C

试题分析：句意：张贴在墙上的广告是由我妹妹设计的。该句的主语是The advertisements，已有谓语动词are designed，故填写在空白处的动词应与后面的on the wall一起构成定语修饰前面的名词，所以选C，过去分词短语作后置定语。