...Be in earnest about it... 
James W. Donovan 「Don't Marry」
...Be in earnest about a matterof so much moment...
James W. Donovan 「Don't Marry」
...“I am in earnest,” he answered...
James W. Donovan 「Don't Marry」
..." With these words herushed into the midst of the squadron of sheep, as courageouslyand intrepidly as if in good earnest he was engaging his mortalenemies...
Miguel de Cervantes Saavedra 「The History of Don Quixote de la Mancha」
...This I make my earnest request, being resolvednever to be rough with thee again upon this account; for I mustconfess thou canst lay a heavy hand on a man upon occasion...
Miguel de Cervantes Saavedra 「The History of Don Quixote de la Mancha」
... “Now,” said he, “it’s earnest...
Robert Louis Stevenson 「Kidnapped」
... “Well, as you are so earnest that this rebel should not escape, madame, I promise you he shall not escape...
Alexandre Dumas, Pere 「The Man in the Iron Mask」
...After that he settled down to fight in earnest with the result that Andre-Louis was hit three times in succession...
Rafael Sabatini 「Scaramouche」
... “I don’t know at all, only I have always been told that he could make as much as he pleased when he was thoroughly in earnest...
Alexandre Dumas, Pere 「Ten Years Later」
...This morning I fancy I saw that face, in earnest conversation with one of M...
Alexandre Dumas, Pere 「Ten Years Later」
...His earnest cogitation was rudely interrupted by a thunderous roar fromthe opening above him...
Edgar Rice Burroughs 「Tarzan and the Jewels of Opar」
...Thus she towered over him, loving but strong, her great, earnest eyes searching his soul...
Baroness Orczy 「El Dorado」
...They were witnessing a quarrel between the French envoy and Sir Percy Blakeney wherein the former was evidently in deadly earnest and the latter merely politely bored...
Baroness Emmuska Orczy 「The Elusive Pimpernel」
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