What can schools do to make Science more attractive to teenagers?

i see a green tree and a dog near it. this orange dog can't speak. little tanya can't read. she can speak.

5) they were at the party, were not they?

6) he will not be back, will he?

7) she could help us, could not she?

8) you have no mercy, have you?

9) we have some food, have not we?

10) he will be here, won't he?

11) it's not tasty, is it?

12) it was good, was not it?

1.to test

2. -

3  to apply

4  to require

5   to fail

6  to fail