句子写作：”Happy Christmas “he said.
“Happy Christmas “he said, smiling and picking out two flowers.
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_______isknowntoall，Chinawillbean_______powerfulcountryin20or30years’time.
Whataretheparagraphqualities?
句子写作：TodayatschoolMrMoorebroughtinhispetrabbit.Heshowedittotheclass.
句子写作：Iwasveryembarrassed.Ididn’tknowwhatIshoulddo.
句子写作：Thepianoplayerbegantosingloudly.