1. First 2. Next
3. In conclusion 4. For example
56. 1. if 2. unless
3. and 4. because
57. 1. As 2. Until
3. Once 4. Before
58. 1. the skeleton only is left 2. only the skeleton is left
3. the skeleton is only left 4. the skeleton is left only
59. 1. an imprint is fish 2. fishy imprints
3. the fish's imprint 4. the imprint fish
60. 1. its top 2. top of it
3. top of its 4. a top of it