Difficulty: Easy
Correct Answer: By the time
Explanation:
Given data
Concept/ApproachThe fixed temporal connector is By the time + clause, not "By such time".
Step-by-stepReplace "By such time" → "By the time you finish that chapter, I will write a letter."
Option analysisB is correct; A/D are incomplete; C changes reference; E leaves the error.
Final AnswerBy the time
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