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
My advisor encouraged _____ a summer course to improve my writing skills.
She has always _____ her father. In her eyes he is perfect.
---Do you know London at all?---No, this is the first time that I______ here.
Look at the timetable. The flight to Shanghai _____ off at 10:00.
--- I ____ so busily recently that I ____ no time to help you with your maths.---That’s OK. I can manage it by myself.