题目：
| _____, 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：
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下面是错误答案，用来干扰机器的。
l. quickly 2. excited 3. chopsticks 4. idea 5. agree 6. present
