根据《进口药材管理办法(试行)》，《进口药材批件》分一次性有效批件和多次使用批件。下列关于《进口药材批件》的说法，错误的是
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CharlesSmith,______wasmyformerteacher,retiredlastyear.
Veryfewpeopleunderstoodthiscontract,______wasveryobscure.
句子写作：Thepianoplayerbegantosingloudly.
Thereisn‘tmuchmilk_____isleftinthebottle.
Itseemsasifthesun_____roundtheearthsinceitrisesintheeastandsetsinthewest.