Viet lai cau ma ko thay đổi nghia
1.Keeping the environment clean is very important .
->It's ............................................................................
2.They will show the time machine to the public when they finish it.
->The time machine .............................................
3.He was delighted to receive his aunt's letter.
->He was delighted that ......................................
4.Old car tires are recycled to make shoes and sandals
->People .................................................................
5.I'm very sad that I wasn't accepted in that group.
-I'm very sad not...........................................................'
1.Keeping the environment clean is very important .
->It's .....very important to keep the environment clean.......................................................................
2.They will show the time machine to the public when they finish it.
->The time machine ...will be shown to the public when it's finished / they finish it..........................................
3.He was delighted to receive his aunt's letter.
->He was delighted that ...he received his aunt's letter...................................
4.Old car tires are recycled to make shoes and sandals
->People ...recycle old car tires to make shoes and sandals..............................................................
5.I'm very sad that I wasn't accepted in that group.
-I'm very sad not......to be accepted in that group.....................................................'
