Viết lại câu

1-My sister hasn't finished the project yet.->
2-They'll send you a letter of invitation soon.->
3-They have bought a lot of food ->.....
4-Jack won't pay the bill.->
5-He is going to introduce his new collection this evening.->
6- No student can find out the correct answer.->.
✰✰✰✰✰✰✰✰✰✰...
7-The mechanic repaired my car.->.....
8- We must save natural resources for future use.->.
9-Mai has to wash clothes every day.->....
10-Someone has stolen her motorbike.->...
11.No one has left any books on that table ->No books.....
12.People speak French and English in Canada. ->
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