题目内容
Some pre-school children go to a day-care center, __________ they learn simple games and songs.
| A.then | B.there |
| C.while | D.where |
D。
where在此引导非限制性定语从句,修饰先行词a day-care center。
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题目内容
| A.then | B.there |
| C.while | D.where |