There are differences in spelling and pronunciation_______ AmE and BrE. That means AmE is more or less different _________BrE.
The new headmaster _____ at our party and sang us a song, which greatly added to our joy.
I _____ along the pavement yesterday when some stranger came up and asked me the way to the nearest hospital.
Zhang Heng, one of _____ best-known Chinese astronomers, showed a strong interest in _____ astronomy as a child.
Samuel was _____ why few of his friends attended his birthday party.
_____ life exists on any other planet in the solar system still remains a question.