73%
Complete the frantic time traveler's warning to his past self. Choose ALL the options that apply.
The correct answers are You'd better not touch that glowing red button! and You had better not speak to anyone from 1985.
The negative form of "had better" is "had better not" followed by a bare infinitive (without "to"). We do not use "don't" or "hadn't better" to form the negative. "You'd" is the correct contraction for "You had".