Exercise 1.3. explain in english the meaning of the following words: 2. crystalline structure 4. heat treatment 6. creep

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) he may not read this book. 2) mary might forget to call you. 3) they could go to the fitness centre.