8.
1 I ________(后悔,遗憾)not taking your advice.
2 There is always someone ______________(穷的) than you.
3 He_____________ all kinds of difficulties (克服) and succeeded at last.
4 Our classroom is ____________with an air conditioner (配备).
5 The old man _________(观察) a stranger break into the house.
6 He was ill and ________(因此) he could not come.