问题
选择题
_______ has been announced, we shall have our final exams next month.
A．That
B．As
C．It
D．What
答案
B
as引导非限制性定语从句，可放于主句之首，意为“正如，好像”，as指代主句的整个内容。
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_______ has been announced, we shall have our final exams next month.
A．That
B．As
C．It
D．What
B
as引导非限制性定语从句，可放于主句之首，意为“正如，好像”，as指代主句的整个内容。