从下列各句中找出错误并改正。①When I woke up, I found myself lying in bed and surrounding by doctors and nurses.
②He is one of the students in my class who is often praised by our headmaster.
③I saw streets just as they had been by stepping stones along the road.
④They made Professor Zhang the director of the institute.
⑤A library, together with five thousand books have been sent to the nation as a gift.
⑥It surprised me was that the little girl worked out the problem in only five minutes.
⑦She is not certain about she has done anything wrong.
⑧The discovery of new evidence led to the thief having caught.
⑨By the 10th century, Old English became the official language of England.
⑩When she entered the room, she saw him was surfing the Internet.