问题
选择题
He _____ more than 5,000 English words when he entered the university at the age of 15.
A．has learned
B．would have learned
C．learned
D．had learned
答案
答案：D
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He _____ more than 5,000 English words when he entered the university at the age of 15.
A．has learned
B．would have learned
C．learned
D．had learned
答案：D