1)she told my sister that she was wrong (confusing, who was wrong? She? Or my sister?) 改成:she admitted to my sister .....(自己承认)。或 she pointed out to my sister....(指出)2)Li Bai was one of the greatest poets3) looking up the sky, I saw a bird was flying round the tree.4) his brother wants to study either American literature or English literature.5) Tom is one of the students who refuses to accept the invitation to the party.6) she was knocked down by the bike but she was not seriously hurt7) Upon entering the room, no one was seen there.8) Over the past few years, there were nearly 1000 houses builted in the city.10) the machine was packed in a box, the typist could not find it. 原本意思是 the typist is packed in box,那不是原意吧!9)he lost the purse, and found it shortly, the police helped him. Soon 改成shortly比较恰当