21.   He never shirked from doing his duty.

22.   They did their duty without shirking or complaining.

23.   He was just doing his duty.

24.   A.G. Kennedy, its most recent editor, has noted that apart from chs.

25.   They have done their duty.

26.   Here, it is not doing duty for a use of rhinoceros but rather for a mention of it.

27.   A vicar is literally a deputy doing the duty of a parish for another.

28.   Harry swallowed the soft strangulation of tears and clung with desperate hands to the obstinacy that must do duty for his flagging courage.

29.   And he might be doing guard duty.

30.   Although Isabel does her duty, she also amuses herself.