the end of last term, we had learned 3,000 English words.A.AtB.ByC.ToD.On
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_______ the end of last term, we had learned 3,000 English words.
| A.At | B.By | C.To | D.On |
试题答案
B
解析

_______ the end of last term, we had learned 3,000 English words.
| A.At | B.By | C.To | D.On |
B
解析