题文
The new rule has been working effectively since it __________.
| A.comes into existence | B.was come into existence |
| C.came into existence | D.was coming into existence |
推荐试卷
The new rule has been working effectively since it __________.
| A.comes into existence | B.was come into existence |
| C.came into existence | D.was coming into existence |
试题篮
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