The employees were tired of working ______ hours and some of them even gave up their work.

h a _____ of snow covered them, thesmall hills look very beautiful

If we try our best, we can finish the work with _______people and ______money.

The boy talked hismother____buying him a home computer.[ ]

Too much pressure from study leads to sleeplessness, which _______ increases the risk of forgetfulness.