【題目】When parents come to visit the school and talk to the teachers, we often play songs by students, and messages are also given in order to keep them of events such as outings and school plays.

A. sang; informed B. sung; informing

C. sing; informed D. sung; informed

【答案】D

【解析】考查過去分詞。句意：當(dāng)家長們來學(xué)校拜訪，和老師說話時，我們經(jīng)常和學(xué)生們一起唱歌，而且發(fā)短信讓家長知道諸如郊游和校園劇之類的活動。第一空是過去分詞做后置定語；第二空keep +賓語+ informed of保持某人被告知，根據(jù)句意可知選D。

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