The idiom ' Red letter day ' means
P. because they had so little Q. Thousands of years ago, R .our ancestors had to save and store S. whatever they could save
Aa boring day
Ba sad day
Ca dangerous day
Da happy day
P. because they had so little Q. Thousands of years ago, R .our ancestors had to save and store S. whatever they could save
Aa boring day
Ba sad day
Ca dangerous day
Da happy day
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