A: Listen! Is it Linda singing in the next roomB: No, it __________ be her. She is still in Shanghai.

Five years later, he returned home, his character greatly _________.

__________ there on time, I have to take No. 11 bus.

______ have proved great adventures,but we have done the greatest march ever made in the past ten years.

No one knows for certain how the first Americans arrived in _____ is now the United States.