1 . They walked to work because they couldn’t ________(付得起) a taxi.

2 . Those poor and needy teenagers were excited to find a shop at the corner where they could buy ________(afford)priced bikes.

3 . The obvious one is money; eating out once or twice a week may be ________ (afford) but doing this most days adds up. There could be an even________ (high) cost on your health.(所给词的适当形式填空)

4 . — Let’s go to the park tomorrow morning.
—Sorry, I’ve got an important appointment at 9 o'clock and I can’t 　　　 to miss it.

A．manage	B．help
C．wait	D．afford