Toni Morrison, Nobel Prize-winning American writer, says if there’s a book you really want to read, but it ______ yet, then you must write it.
A．hasn’t been writtenB．hasn’t writtenC．doesn’t writeD．isn’t written
A
考查時態(tài)與語態(tài)。Yet常與現(xiàn)在完成時連用。句意：如果這本書到現(xiàn)在為止還沒有被寫出來，你必須去寫。
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