... breakthroughs19. imagine 20 . combine 21 . (C) 22 . (E) 23 . (A) 24 . (B) 25 . (D)Answer Key695 Skill AQ1 practice 1Step 1C, B, D, F, A, EStep 2 Suggested answers:1. One kind of work the speaker does ... classes,but then hears he’s not seriously ill. Then, the man tellsher there’s an extra week to finish the assignment. Theydon’t have to turn in the assignment until the professoris back. The woman ... than the oceans. It contains mineral salt which is deadly to plantsand fish. Therefore, there are no living things in this sea.There are two reasons for the Dead Sea’s saltiness. Step 2 Suggested...