The teacher used to stay up deep into the night ______, he made himself ill [ ]

You have never seen an American film, have you? —- ________. How I wish I had such a chance!

Even a drop of water ______because it is soimportant to all the living things.

i ___as a secretary for five years in thecompany, and now she is general manager of it.

What’s your opinion? — I suggest the work ____ as soon as possible. [ ]