1.I'm sure he took your briefcase by mistake -> I'm sure he didn't 2.I remember doing this assignment before. -> I remember that I 3.Pele is the best football player in the world -> No one else 4.I haven't eaten as much as you -> You have eaten 5.The man who i worked with was very nice -> I worked with a man 6.Mrs.Pike waited for us at the bus stop yesterday. -> The woman waiting 7.No one in our club can speak English as fluently as Mai -> Mai speak 8.Jack was punished only due to her sister's carelessness. ->Because 9.They were so astonished at the information that they were speechless ->It was such 10.This river flows through the town.It is extremely polluted 11.The best cook lives next door to me .He served all of us at the party yesterday ->The best cook to 12.If anyone succeeds in solving the problem , it will probably be him ->He is the most