Sam will be sending the products today.此处“be＋Ving”是个什么语法?

Sam will be sending the products today.此处“be＋Ving”是个什么语法? ATTEMPT NSD!Will be sending message to admin! if the launch in 2005 is successful.China will be the third country_____its astronauts into space afer Russia and US.A.send B.sends C.sending D.to sendl don`t know Sam`s telephone number.will you please___in you address book for me?A.look up it B.loo Four astronauts (will be taken/will be sending up) to the Hubble.这两个答案选哪个?为什么 求翻译:Thanks,I will be sending you a file shortly with your UK Listings. where are the books?don,t worry,they------ here in no time .空里填will be sent 还是are sending.为什么答案是are sending, next year,my company will be sending me to England此处是将来进行时的哪种用法will be sending在这个句子中强调什么。为什么不用will send 而是用将来进行时 Sam said there ()a tennis match the next sunday.A.will have B.will be C.would be there will be more room for the new baby---a brother or sister f_____ Sam. The apartment will a_____ be very near to Sam`school so he can w_____ to school. china will be the third country( )its astonauts into space after Russia and the USAsend sends sending to send Lt will soon be sending up four astronauts to repair it.这是被动语态?这种被动语态结构是什么? not only...but 能这样造句不Pupil will be sending him not only a gift ,but also an albam I will be sending you another order this week for completion by the end of the month. I will be sending you fu tech packs in cap le days.是不是说过几天会发点东西给我? sending sending Four astronauts____to the Hubble.A will take B will send up C will be taken D will be sending up请问选择哪个,分别说出每个为什么对与错