问题
选择题
I began watching here an hour ago, but now nothing _______ yet.
A．happens
B．will happen
C．happened
D．has happened
答案
答案：D
题目分析：句意：一小时前我开始看这里，但是现在还没有发生任何事。由yet.可知该用现在完成时，所以选D。
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I began watching here an hour ago, but now nothing _______ yet.
A．happens
B．will happen
C．happened
D．has happened
答案：D
题目分析：句意：一小时前我开始看这里，但是现在还没有发生任何事。由yet.可知该用现在完成时，所以选D。