21.   It was local stations where the crunch was most emphatic, and where news directors had to prove their mettle.

22.   My boat company had already more than proved its mettle, transporting artillery barges and supplies through intermittent sniper fire up and down the rivers of the Mekong Delta.

23.   Now that he has proved his mettle as a man able to follow the rules, he can use his Galliano line to break more of them.

24.   Now, he said, the opposition must prove its mettle, and it needs help from the West that promised it.

25.   Oedipus, as the play begins, has already proved his mettle as a ruler and a husband.

26.   Praise it and prove your mettle.

27.   Some pros like Paul Mueller, an accountant, see questions for free advice as a way to prove their mettle.

28.   They should find it satisfying when she proves her mettle as a spy.

29.   They proved their mettle by winning a dozen games away from home.

30.   To prove her mettle to her men, Morgan decides to go after the treasure stolen years before by her dad and his two brothers.