房租下个月要翻倍了。

The rent will be ___doubled next month.

她把餐巾对折后放在膝盖上。

She placed the napkin on her lap after ___doubling it.

这间客厅晚上会变成客房使用。

The living room ___doubles as a guest room at night.

兔子突然调头跑回了洞里。

The rabbit suddenly ___doubled back into its hole.