"His colleagues worked out his interesting idea"; "We worked up an ad for our client"
"Things worked out in an interesting way"; "Not everything worked out in the end and we were disappointed"
"elaborate a plan"
"She works out in the gym every day"
"The fees work out to less than $1,000"
"did you solve the problem?"; "work out your problems with the boss"; "this unpleasant situation isn't going to work itself out"; "did you get it?"; "Did you get my meaning?"; "He could not work the math problem"
"Some parents exercise their infants"; "My personal trainer works me hard"; "work one's muscles"; "this puzzle will exercise your mind"