Complete the following sentences:

1. We went by car lest_.
2. You should boil water because_.
3. I am saving money so that_.
4. You can get good marks provided_.
5. _he was my friend,he did not stand by me.
6. The principal will not excuse Ramesh even if_.
7. Kanishk is studying Law in order that _.
8. Malik was challenged by the police because _.
9. Take less sugar if_.
10. You must keep to the left or_.
11. Don't depend on others if_.
12. I have done nothing wrong,therefore_.
13. She behaves as if _.
14. He can't overtake you,however_.
15. He ran as if_.
16. She held her head steadily lest_.
17. We stayed indoors as long as_.
18. Do as_.
19. I can't trust unless_.