The April Fools' tradition is said in the sixteenth century.A. to startB. to be starting

发布时间：2020-08-17 09:59:32

The April Fools' tradition is said      in the sixteenth century.
A. to start
B. to be starting
C. to be started
D. to have started

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A. to start
B. to be starting
C. to be started
(答案→)D. to have started
解析：D 考察非谓语动词及时态。句义：据说愚人节的传统开始于十六世纪，in the sixteenth century提示动作发生在过去，并对现在造成了影响，故使用完成式。Tradition与start之间构成主动关系，故使用不定式的完成式。故D正确。
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