The machine is difficult to build ____ easy to maintain.
Correct answer A. but
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Correct answer A. but
Correct answer D. keep up, destroyed
Correct answer D. pain
Correct answer B. persists
Correct answer D. captured
Correct answer C. lazy
Correct answer A. spoil
Correct answer D. met
Correct answer B. talking
Correct answer C. for
Correct answer C. against
Correct answer D. seems
Correct answer A. inaccessible
Correct answer D. beside
Correct answer A. faith
Correct answer A. at
Correct answer C. had worked hard for it
Correct answer C. had rung
Correct answer B. but
Correct answer B. full