It was 1995 __________ we began to develop the new computer system.
I’ve already told you that I’m going to buy it, ________.
The manager discussed the plan that they would like to see ______ the next year.
Gun control is a subject ______Americans have argued for a long time.
The astronauts found that ______ the spaceship went further and further into space, it became more and more difficult to control its own movements.
You shouldn’t talk until ________ to.