What some people don’t realize is ________ difficult life can be after they get addicted to drugs.

We want such materials ________ can bear high temperature and pressure.

Overseas Chinese are particularly sought out for positions a high degree or leadership is required.

In the wartime, the masses devoted whatever they had to _____ the army in fighting against the Japanese. [ ]

Do you know why a meeting by the middle school teachers last Sunday—To demand smaller classes of no more than 25 to 30 students in each class.