帮我改几个倒装句吧.

帮我改几个倒装句吧.
1.You will see so many seats only at a stadium in Beijing (ONLY)
2.I have seldom been so upset (seldom)
3.You will be able to write a good report only after you have acquired the information you need.(only after)
4.He gave a lot of presents to his friends,but he has never given one to me.(never)
5.She is not only good at languages,but also at history.(notonly butalso)
6You can improve your English only by practising it as much as possible.(onlyby)
7.I have never read such an exciting report before.(never before)
8.She took part in a horse riding competition,and did not miss a jump once.(not once)
用括号里的词改
倒装我迷糊死了,不懂.