Sentence structure will be as follows : Hence, didn.t know is the right usage.
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Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select No improvement. Rajesh didn't know my address.
Directions: Read each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer. I didn't knew you had gone to Goa for a vacation.
