15. When she retires, Professor Charon _____ here for over thirty years, but her classes are never dull.
(A) teaches
(B) has taught
(C) will teach
(D) will have taught
詳解 (共 3 筆)
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正確答案是D，will have tau...
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未來完成式的使用時機為：在未來某個特定時...
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(A) teaches 錯誤：這個選項...
私人筆記 (共 2 筆)
未解鎖
要表達「到那個未來時間點為止已經教了三...
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