In 1800s, a group of adventurers(探险家) ______ on their exploring trip. Five days later, they came to what is now known as Quebec.

－The enemy spy was found at last－Really? Where ________ himself?

Too bad! We have _____ foodat home today.

Because every day we have _______mail to receive ,we may not be able to reply to your letter.

_____ you have worked out the first problem, you may go on to work on the second