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

We _______ keep quiet in the library.—Yes, I agree with you. And we _________ bring our student cards every time.

to the world for help, Hollywood stars leda huge fundraising drive for Haiti

She missed the plane, ________driving very fast to the airport

下列词语中加线的字,每对读音都相同的一组是(　　)