The time he has devoted in the past ten years ________ the disabled is now considered ________ of great value.

—How is life in the countryside?—Life is quiet and peaceful here. Nothing else can _______ a walk in the country road after sunset.

After being laid off, he was reduced to        himself        to plant vegetable on the farm.

Nowadays many parents want to have their kids ____ to as much art and culture as possible.

My camera can be___to take pictures in cloudy or sunny conditions.