Add tag questions to the following sentences

ADD TAG QUESTIONS TO THE FOLLOWING.

1.Tom invited us to come to his party,..... didn't he ................?

2.There was an exciting football match on TV last night,.........wasn't there .........?

3.There have been many achievements since the country carried out econommic reforms,..... haven't there ............?

4.Iam not too fat,........... aren't I ..............?

5.I'm wrong,........ aren't I ...........?

6.Some one discovered penicillin in 1928,........ didn't they .............?

7.You stayed home last night,........ didn't you ...................?

8.The poor don't have many things to eat,........ do they ..........?

9.The teacher asked you if you finished your homework that day,....... didn't he (she) .........................?

10.You were driving home when you saw Lan,....... weren't you ............?

11.You are thirsty,........ aren't you ................?

12.Nam wishes he had worked hard last year,...... doesn't he .............?

13.You had breakfast before you went to school yesterday,.......... didn't you ...........?

14.You could ride a bicycle when you were five,......... couldn't you .................?

15.People who exercise frequently are healthier,......... don't they .................?