Muuta alleviivatut kohdat lauseenvastikkeiksi.

1. While I waited for my flight, I read a book.
2. When we had found an empty table, we sat down.
3. When my sister saw me, she smiled happily.
4. After we had eaten, we asked for the bill.
5. Since I had been lazy, I failed my test.
6. As she is such a nice person, she always helps me.
7. Before I order anything, I check the menu.
8. As she had heard a terrible rumour, she was very blue.
9. If the parcel is sent today, it will be in Sweden tomorrow.
10. If they are studied carefully, these rules can be learnt.