If people spend most of their time doing nothing, they will find their lives _______________ (mean).

I am _______________ in doing charity work. (interest)

Last year, she was really _____________ at English. She couldn't even say a word in English. Now her English is much better. (hope)

The new teacher's advice was very _____________. His students could learn English vocabulary faster. (use)

They were happy to know that their contributions were ________________ to the poor people in that area. (mean)

Our school volunteer activities are very ________________. (excite)