根据句意，用方框中所给单词的适当形式填空。（每小题1分，共5分）。
polite work write speak understand
【小题1】Mr. Green spoke very loudly so that he could make himself at the meeting.
【小题2】There are many English in the world. They think speaking English is very popular.
【小题3】Do you have any trouble out this math problem .
【小题4】Some people think it is to ask someone’s age.
【小题5】 English is not the same as oral English.understood
网友回答
(答案→)understood
解析：
【小题1】考察make 的使动用法。根据上文Mr. Green spoke very loudly可知下文意思为：这样他可以让自己在会上被听到。make sb done .意思是使某人被……。故填understand的过去分词understood。
【小题2】联系下文可知上文句意为：世界上有很多说英语的人。故填speak的名词形式speaker。
【小题3】考查have trouble (in ) doing sth。联系下文可知所需短语为work out，解决，算出。故填working。
【小题4】考查英语中反义词的表达。根据下文ask someone’s age可知此处单词含义为：不礼貌。故填polite的反义词impolite。
【小题5】结合下文the same as oral English.可知前文意思为书面英语，故填written。