1. A dictionary is a book which gives you the meaning of words.

2. I enjoyed Mexico city, where I spent my last vacation last summer.

3. The bed in which I slept last night is good. ( in which = where )

4. It was on my birthday party that my mother gave me a computer.

5. Let's go to the beach this afternoon, will you?

6. I last saw my sister five years ago.

1.a dictionary is a book which gives you the meanings of words

2.i enjoyed mexico city where i spent my vacation last summer

3.the bed in which i slept last night is good

4.it was on my birthday party that my mother gave me a computer

5.let's go to the beach this afternoon,shall we?

6.i last saw my sister 5 years ago