A-A+
Many a student ______ the usage of the word si
问题详情
Many a student ______ the usage of the word since the teacher explained it last time.
A．have grasped
B．grasped
C．had grasped
D．has grasped
参考答案
正确答案：D
解析：本题考查主谓一致及现在完成时。该句意为“自从老师上次解释过后，许多学生都掌握了这个词的用法”。many a/more than one+单数名词作主语时，谓语动词用单数。由since引导时间状语，主句用现在完成时。因此选D项。
