题目内容
By the end of last year, they ______ 1000 English words.
- A.will learn
- B.had learned
- C.has learned
- D.learned
B
练习册系列答案
相关题目
By the end of the last month, I _____________ all the CDs of Justin Bieber.
| A.collect | B.collected | C.have collected | D.had collected |