Rewrite the sentences without changing the meaning

VI. Rewrite the sentences without changing the meaning

36. My friend bought a box of chocolates last week.

 -> A box of chocolates ……………………........................................................……

37. No river in the world is  as  large as Amazon.

-> Amazon is ………………………………….....................................................……

38. Unless he takes these pills, he won’t be better.

-> If ............................................................................................................

39. I haven’t gone to that restaurant  for two  months.

 -> I last …………………………………….................................................................

40. I thought about what had happened all those years before.  

-> I cast ………………………………..........................................................................