—Are you going to help him?—Why  ___ I help him? He' s never done anything for me．

— Do you know whose magazine is it?— I think it         be Lily’s, for we can find her name on the cover.

The weather turned out to be fine. I       the trouble to carry the umbrella with me.

I ______ follow you. Would you please repeat it?

—Is it necessary to look up every new word when I come across it in reading?—No. You ________， because you are likely to guess the meaning from the context.