The Nanjing Yangtze River Bridge is still very strong, ___________ it is almost 43 years old.

   A. although   B. but    C. so    D. because

 

—Will you go to Nanjing by bus _____ by plane?

—By plane. It is expensive ______ fast.

A．or; but           B．or; and           C．and; but          D．and; and

 

Nanjing is one of           capital         in China.

A. older; city        B. the older; city   

C. oldest; cities    D. the oldest; cities

 

1. My grandfather left his hometown over 55 years ago.
My grandfather　_______________________________ for ____________ 55 years.
2. My grandparents got married 50 years ago.
It's 50 years________________________________________________
3. My grandfather arrived in Nanjing last Monday. He is still in Nanjing.
My grandfather has　___________________ since last Monday.
4. My grandfather went to bed very late last night. He was too excited.
My grandfather_________________ go to bed__________ it was very late last night. He was too excited.
5. It took my grandfather two days to travel around the center of the city.
My grandfather　______________ two days______________________ the center of the city.