帮我看看这几道英语题选什么啊28.Electricalenergy______fromthesuninaroundaboutwayisthemostwidelyusedenergytoday.A)comeB)tocomeC)comingD)havingcome24.______thatherefusedtohelpus,thereisnoreasonwhywesho

　　帮我看看这几道英语题选什么啊

　　28.Electricalenergy______fromthesuninaroundaboutwayisthemostwidelyusedenergytoday.

　　A)comeB)tocomeC)comingD)havingcome

　　24.______thatherefusedtohelpus,thereisnoreasonwhyweshouldnowhelpthem.

　　A)BeingseenB)SeeC)SeenD)Seeing

　　22.Agoodmanyproposalswereraisedbythestudents,______hadbeenexpected.

　　A)thatB)whatC)asD)so

　　19.Thetrafficwasveryheavy;otherwiseI______here30minutessooner.

　　A)shouldhavebeenC)wouldhavebeen

　　B)wouldbeD)hadbeen

　　20.Overtenpeoplediedandtwentypeoplewere______woundedinthetraincrash.

　　A)eventuallyB)urgentlyC)bitterlyD)seriously

　　帮我看看选什么答案啊,再给我仔细讲讲为什么选这个答案吧,