FIRST BACHILLERATO: Key to Unit 1 Grammar Plus

1.

1. Were waiting

2. Was Standing

3. asked

4 didn't say

5. went

6. looked

7. noticed

8. was watching

9. came

10. seemed

11. gave

12. Rang

2.

1. Javir broke his arm when/while he was skiing in Andorra.

2. Frank came to our house when/while we were having dinner.

3. I saw an accident when/while I was walking to school this morning.

5. I fell asleep when/while I was watching TV.

6. Enrique went home early because he wasn't feeling very well.

3.

1.- used to

2. both

3. used to

4.

1. When we were kids we used to have a dog

2. I used to do my homework in the library but now I do it at home

3.Did you use to live in Asturias before you came here?

4. Yesterday I got up at 6.30.

5. Correct

6. He fell asleep while he was reading his book.

5. 

1. B; 2.C; 3. A; 4. C; 5. B; 6.A

The following links will lead you to very appropriate explanations of the differences between used to/be used to/ get used to AND to several activities which you may find very useful.

http://englishisallaround.blogspot.com.es/2008/11/used-to-be-used-to-get-used-to.html

Present Simple and present continuous:

http://www.ego4u.com/en/cram-up/grammar/simpre-prepro

Gerunds and Infinitives:

http://www.englishpage.com/gerunds/index.htm

Past simple and Past continuous:

http://www.e-grammar.org/past-simple-continuous/

If you have any doubt or question, please comment it here and share it with the rest of the class.