1) By the end of this year... 2) By the time you arrive... 3) Before midnight... 4) By next summer... 5) By the time the class finishes... 6) By 2030, scientists... 7) By tomorrow afternoon... 8) By the time Christmas comes... 9) By the time I finish the B2 level... 10) By next Friday... 11) By this weekend... 12) By the end of the month... 13) By the time I retire... 14) By the time I turn 80...

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