问题
选择题
| _____, it is best not to let children sleep in the parents’ bed, since this can easily become a habit. |
| A. If can B. If possible C. Unless so D. Though possible |
答案
答案：B
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| _____, it is best not to let children sleep in the parents’ bed, since this can easily become a habit. |
| A. If can B. If possible C. Unless so D. Though possible |
答案：B