The Great Wall istourist attraction that millions of people pour in every year.
so a well-known
a so well-known
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such a well-known
After his wife died, he kept himself _____ from other people and the outside world,
— Why is little Jimmy so naughty today? — He is bored, so he _____ a little silly.
— Real Madrid is sure to win the match!— It's hard to say. You know, anything _____ happen even in the last minute.
Thomas set off, leaving word with his daughter _____ he would come back soon.
Our train was two hours ______ because of strong winds and heavy rains.