Is     necessary to complete the design before National Day?

—Which one do you want to buy, an ipod touch 4, an ipad 3 or an iphone 5 ?—______. They are too expensive.

—Which of those electronic dictionaries do you like most? —        . They are both expensive and of little use.

Maybe money is important to us, but it doesn’t mean ___________, I think.

—Which tie would you prefer，the black tie or the red one，Madam?—I’ll take ________ to have a change sometimes.