He was in the mountain for a year. He felt as if he was ______from the outside world.

I have some difficulty in finding his house. I wish I_____his address.

(2013·宁夏银川一中高三第四次考试)It was terrible. The car ________ break down just as we were going on our holiday.

You _____ come earlier. The bus left amoment ago.

The Great Hall of the People ____________in the 1990s