VII-

1, The teacher is going to collect our papers

2, Did Thomas Edison invent the electric light bulb?

3, Recycled plastic makes a lot of beautiful toys

4, Who wrote the letter ?

5, People could easily mistake her for a top model

6, Are they making a big cake for the party ?

7, They are going to build a skyscraper next year 

8, Did they not teach him how to behave properly ?

9, What reasons did they give ?

10, They are opening a new community center next week

11, Scientists are developing a new drug

12, They will publish the result in July

13, Why haven't they repaired the dishwasher ? 

VII:

1) The teacher is going to collect our papers

2) Did Thomas Edison invent the electric light bulb?

3) Recycled plastic makes a lot of beautiful toys

4) Who wrote the letter ?

5) People could easily mistake her for a top model

6) Are they making a big cake for the party ?

7) They are going to build a skyscraper next year 

8) Did they not teach him how to behave properly ?

9) What reasons did they give ?

10) They are opening a new community center next week

11) Scientists are developing a new drug

12) They will publish the result in July

13) Why haven't they repaired the dishwasher ?