—I’m afraid I have to give it up.—Don’t be discouraged. Remember sticks to his work will

问题补充：

—I’m afraid I have to give it up.

—Don’t be discouraged. Remember sticks to his work will succeed one day.

A. anyone

B. who

C. no matter who

D. whoever

答案：

A. anyone

B. who

C. no matter who

(答案→)D. whoever

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