求大神解英语题,要翻译,写过程,就是为什么这么解,时态什么的要写出来,要详细
4.I often wonder whether our life ___considerably by 2020.(change)
5.He ___in a small workshop,but now he is the head ofbig business company.(work)
6.I ___my breakfast when Mum told me that I was wanted on the telephone(have)
7.my niece has been to Sumatra and Iran as well as all of Europe.By the time she is twenty,she___almost everywhere.(would/will be)
8.Is this the first time that you ___Shanghai?(visit)
9.While people may refer to television for up -to -the -minute news,it is unlikely that television ___the newspaper completely.(replace)