8. ________, but he never lost heart. He kept on experimenting on new materials for his project.
(A) Even though Jerry had failed several times
(B) While Jason’s proposal was rejected
(C) Collin failed on his experiment again
(D) Chris having failed several times
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(A) Even though Jerr...
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儘管傑瑞多次失敗，但他從未放棄。他不斷...
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