10._________to drugs, he ran out of all his money.
At present, how we can look after ______ old is becoming ______ hot and severe issue.
It is the duty of the police to ______ social order.
If children are asked to help with housework, they will feel needed. ______, they will learn to take care of themselves.
---Why not wear your miniskirt, Rose? --- Well, my legs are too thick, if you ______ know.
We students are so busy with our homework that we have no time for outdoor exercise, ______ we have the desire.