一次数学竞赛，玲玲、明明、美美共得284.7分。玲玲和明明共得192.2分，明明

单句改错

小题1:The problem is too difficult for us to solve it.
小题2:It was generous for her to give the beggar so much money.
小题3:Meetings and appointments take away most of my time.
小题4:As melly gas came out from the cracks of the well.
小题5:The computer was broke down. It needs repairing.
小题6:Andrew as well as Martin and Jim are fond of music.
小题7:You’ll regret to have said those words.
小题8:In 1983,therewereonly 200 computers connecting to the Internet.