根据所给提示，完成句子。每空一词，含缩略词。
【小题1】Why not go to a concert with your friends? (改为同义句)
What about going hasn’t ,yet. to a concert with your friends?
【小题2】He has ever known the answers (改为否定句)
He How long known the answers did she .
【小题3】I have learned English since I arrived here.(划线提问)
e true have you learned English? .
【小题4】She had few friends when she was 13, ? （改为反义疑问句）
【小题5】我相信我的梦想将来会实现。
I believe my dream will in the future.
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解析：
【小题1】本题表示建议，也可以用what about来表示建议，后跟动名词doing，故本题空格处填about going。
【小题2】本句含有助动词has改为否定句在has后加not，否定句表示还用yet，故本题空格处填hasn’t ,yet.
【小题3】对since从句提问用多长时间，故本题空格处填How long。
【小题4】反义疑问句前句是否定的意思，后句用肯定的结构加人称代词，本题为过去时，用助动词did，故本题空格处填did she。
【小题5】助动词will后跟动词原形，实现e true在被动句也可以使用，故本题空格处填e true。