I can still remember ______ it was so long ago

John has put on so much weight recently that his mother has to______ all his trousers to his measure.

So necessary _____ it to learn about their customs that I will attend a special lecture next week.

May I go and play with my friend this afternoon, Dad? — No, you can’t go out _____your work is being done[ ]

1I often help my mother_______ clothes.