LiYang a famous English expert will deliver a speech telling us a good way to have our o

问题补充：

LiYang, a famous English expert, will deliver a speech telling us a good way to have our oral Englishin a short period.

A. to improve B. improving C. improved D to be improved

答案：

解析：本题考查have sth done结构。因oral English与动词improve之间为被动关系，故选C项。注意D项尽管表示被动，但没有have sth to be done结构。

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