written permission, he had to writeanother letter to the president of the university

__ along the Silk Road led to world-widebusiness 2,000 years ago.

How do you usually go to work —On foot .Walking is much ___ than driving during the heavy traffic time .

Why not the old clothes to people in need— That’s a good idea!

It’s on the festival occasions________ the family get together________ he misses his late father.