The Great Wall istourist attraction that millions of people pour in every year.
so a well-known
a so well-known
such well-known
such a well-known
. His advice made me happy, but ____.
Equipped with modern facilities, today’s libraries differ greatly from ____.
--- I hear Robert has gone to Harvard University for his master’s degree. --- Oh, how nice! Do you know when he ____?
--- Oh, must you? Stay a bit longer. ____.--- Thanks anyway. I’ve got an early start tomorrow morning.
It’s reported that a bus went out of ____ control on a highway ____ east of the city and crashed into a river.