The old professor, to_______ the important invention _______, decided not to keep it for himself, but to make it known to all over the world.

an I use the equipment—Well, just refer to the ________.

Excuse me, _____ –It’s windy.

The American team will arrive in Paris to play a friendly match with a team that________ French and German selected players. [ ]

We were ______ on our way to the airport because of the heavy snow.