Modern forms of transportation and communication have done much to ______ the isolation（隔离）of life in Alaska.

Have you seen_____penI left it here this morning.-ls it_____ black oneI think I saw it somewhere.

Joe regards Jinan as his second hometown because he has here for over ten years.

think that bridge ________ 2,000 metres long It doesn’t appear ________ long.

What’s up— Well, I can’t remember where I parked ____ car.