问题
选择题
_______ the end of last term, we had learned 3,000 English words.
A．At
B．By
C．To
D．On
答案
答案：B
考查介词。by the end of到……时为止，固定搭配，句意：到上学期结束为止，我们已学3000个英语单词。
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_______ the end of last term, we had learned 3,000 English words.
A．At
B．By
C．To
D．On
答案：B
考查介词。by the end of到……时为止，固定搭配，句意：到上学期结束为止，我们已学3000个英语单词。