The most interesting thing to the small boy was _______ he got close to the door, it would open of itself.
Cultural exchange ________ better understanding.
The computer was used in teaching. As a result, not only _______, but students became more interested in the lessons.
The rise in electricity costs has _______ our difficulties in carrying out the project.
A dozen ideas were considered _______ the chief architect decided on the design of the building.
-----Hi, Tina, can I use your car for a while this afternoon? ----- Sorry, _______.