IV. Change the sentences into the positive, negative or interrogative.

Eg:  1. (+) I was an engineer.            (-) I was not an engineer.

                                                           (?) Were you  an enginee

2. (+) This was my teacher.      (-) …………………….…………...…

                                               (?)...………………………..…………...?

3. (-) Thu and Lan weren’t students.    (+)…………………………………..….

                                                              (?) ...……………………….…………..?

4.   (?) Was it a chair?                (+) ……………………………….…..

                                                  (-) ……………………………….……

5. (+) My school Was small.     (-) …………………………………….

                                               (?)...………………………….………….?

6. (+) We were from Vinh city.       (-) …………………………………

                                                       (?)...…………………………...……

7. (-) He wasn’t eleven years old      (+) ………………………………………... 

                                                       (?) ………………………………… ?

8. (+) These were desks.           (-) ……………………………………..……..

                                                (?) …………………………………………..?