7. bury, hide

         bury  埋葬, 掩埋, 隐藏(cover something up, to put something on top of)

         hide  隐藏, 掩藏, 隐瞒, 掩饰(putting something somewhere so you can not find it)

He could not ________ his embarrassment.

She ______ her feelings.

Many men were ________ underground when there was an accident at the mine.

The students are ________ themselves in their studies.