Viết lại câu sao cho nghĩa ko đổi:
1. He was delighted to receive his aunt's letter.
-> He was delighted that ...............................................................
2. I'm very sad that l wasn't accepted in that group.
-> l'm very sad not .........................................................................
3. they will show the time machine to the public when they finish it.
-> The time machine ......................................................................
4. Did you walk to school yesterday ?
-> You .............................................................................................
1. He was delighted that he received his aunt's letter
2. i'm very sad not to be accepted in that group
3. The time machine will be showed to the public when they finish it
4. You walked to school yesterday, didn't you ?