Great changes have taken place in that school. It is no longer _______ it was 20 years ago, _______ it was so poorly equipped.            

The project is based on an agreement, one of ________ purposes is to ensure that the project can be accomplished before the deadline.

This is the museum  _____ we visited last year.

Mary received training in business English for three months, ____she found a job in a big foreign firm.

There is somebody waiting for you, _________ I think might be one of your classmates.