Если мы хотим прибавить к слову -ing, то при каких случаях буква в конце удваивается? Run - Running, jog - jogging...
И если вам не сложно напишите все случаи, когда мы прибавляем -ing и там происходят изменения

She said that she was leaving at six. i’m leaving at six, she said b)          не said peter often went fishing. i often go fishing, he said c)            she said she would be back later. i will be back later, she said d)          i said that i had just seen mark .  i have just seen mark, i said e)          alan said that they had left at 6.00. we left at 6: 00, alan said f)            helen said that she was working. i’m working, helen said g)          i said that we were late.  we are late, i said h)          he said he would phone back. i will phone back, he said i)              david said that he felt all right. i feel all right, david said j)              she said she loved ice-cream. i love ice-cream, she said