I prefer _________ some shopping to ________ camping since the weather isn’t lovely.

-- What about            hiking this Sunday?-- Great. I’d like            with you.

—Would you mind _________ the door?—Not at all.

 My sister spends too much time ______computer games.

---I find the more we study, the more difficulty we have ________ out Maths problems.---Oh, I agree with you. Maths is more and more difficult.