问题
选择题
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 written
B．hasn’t written
C．doesn’t write
D．isn’t written
答案
答案：A
考查时态与语态。Yet常与现在完成时连用。句意：如果这本书到现在为止还没有被写出来，你必须去写。