问题
选择题
2．The ‘April Fools’ tradition is said_________ in the sixteenth century.
A．to start
B．to be starting
C．to have started
D．to have been starting
答案
答案：C
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2．The ‘April Fools’ tradition is said_________ in the sixteenth century.
A．to start
B．to be starting
C．to have started
D．to have been starting
答案：C