I hate ______ their complains all day oneof these days I’ll tell them what I really think

The meeting was concerned_____reforms and everyonepresent was concerned_____their own interests[ ]

Choosing the right dictionary depends on______ you want to use it for

Someone who lacks staying power and perseverance is unlikely to __ good researcher.[ ]

She ought to stop work; she has a headache because she ____ all day long