0A blind alley can mean an attempt to achieve something01font00(,)02font00 which does not produce useful results.02br 02br 00A native speaker says that in the above example a comma is need after soemthing. Do you agree?0-
Top answer
0No. 0-
— Mister Micawber
0No.
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0No. Either 01i00which02i00 or 01i00that02i00 can head defining clauses, and this 01i00which02i00-clause is logically defining 'attempt'.02br 02br 00PS: If it were non-defining,01i00 blind alley02i00 would mean 01i01b00any02b00 attempt to achieve somethi