1 . A company ________ (represent) wrote back and told me the airline was switching over ________ plastic to paper cups on all of its 1,200 daily flights. （用适当的词填空）

2 . He was on ________ phone when I paid ________ visit to him yesterday.

A．the; a

B．the; the

C．不填; the

D．the; 不填

3 . In fact, communication has been ________ best way to promote each other’s understanding and trust. (用适当的词填空)

4 . Now we know that they have ________ same features that can also be found in sharks around Australia and the South Sea. （用适当的词填空）

5 . When Rose was two, her grandpa started taking notes every time they spent time together. He kept________ habit until she was five, filling up three notebooks over the three years. （用适当的词填空）

6 . The Made in China 2025 strategy promoted the combination of manufacturing and new technologies such as________ Internet, big data and cloud computing, Mina added. （用适当的词填空）

7 . In________ countryside in Hebei Province, people would fetch water from a well at dawn. （用适当的词填空）

8 . ________ whole process was so smooth that Tang Hongbo was seen playing with the pen during the process of returning to earth. (用适当的词填空)

9 . Tongmuguan Fault Zone is________ center of the faults, forming a spectacular "V"-shaped grand canyon. （用适当的词填空）

10 . “Medical oxygen is________ priority (优先) of our members,” says Richard Craig, vice president of technical and regulatory affairs for the Compressed Gas Association. （用适当的词填空）