Every ________ had been made in order to save the boy with the H5N1 bird flu, but all in vain. He died at last.
A.effect | B.affect | C.infect | D.effort |
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Every ________ had been made in order to save the boy with the H5N1 bird flu, but all in vain. He died at last.
A.effect | B.affect | C.infect | D.effort |