She typed the answer in the margin: had known / would have baked . Correct.
At 2:15 AM, she reached the last exercise. b2 grammar exercises pdf
Exercise 1: “If I ______ (know) you were coming, I ______ (bake) a cake.” She typed the answer in the margin: had
By exercise 155, she was dreaming in passive voice. “The homework ______ (must / finish) by noon.” Must be finished. b2 grammar exercises pdf
Exercise 200: “It’s high time you ______ (start) studying more seriously.”