(Hint: Unless means If... not )A) studiesB) doesn't studyC) will studyD) studied

Explanation: This is an Inversion of the Third Conditional. The original sentence is "If he had told me..." Removing "if" requires inverting "Had."

sentence. It discusses a hypothetical past outcome that is no longer possible. Explanation: Zero Conditional

He feels sick now. If he ______ so much junk food yesterday, he ______ fine today.