In 1956, William Lindesay was born in a town north of England. His _____ in China dates back to his childhood. One day, when he looked at the map of China in a magazine, he _____ the Great Wall.

“I fell in love with it _____ ,” he said in an interview with China Daily. “I thought it would be a great _____ if one day I could travel along it, from end to end.”

In 1987, he started to climb the Great Wall, _____ it in 78 days. It’s a great adventure（冒险）from the far west of China to the point where the structure meets the sea. The Briton _____ the high temperature, big blisters（水泡）and tiredness during the run. The journey took place in two parts, to _____ the hottest midsummer.

Once in the Gobi Desert, the _____ almost died from dehydration（脱水）. In another trip, Lindesay and his team walked deep into the Gobi Desert of Mongolia and _____ an unknown section of the wall.

During his exploration（探险）, he noticed some sections of the wall were ______ destroyed（破坏）and covered with rubbish. ______ he decided to stay in China to protect it. Modernization and development were making the situation even worse. “Some people say it will ______ centuries to change. I say we don’t have centuries of time. It’s got to be much ______,” he said.

Lindesay always carries a garbage bag with him in the wild, picking rubbish ______ . “Every person can make a difference. If we can pull together, China will be a green, beautiful and ______ country to live in,” he said.

A gift is necessary when one is invited to visit friends in China. After greetings, the gift should     41     (pass) to the host at once.

Remember that usually Chinese people will not open the gift in front of the person     42     gives it. To show respect (尊敬), it may be necessary     43     (explain) what the gift is. Bringing some tonics (补品) to the elders in the family is a good idea. You can also prepare some small gifts for the partner or kids of the host. The host usually makes full     44     (prepare) by carefully tidying up the house and cooking a lot of delicious dishes.     45     the meal is well prepared, the host may say to the guest politely, “Please excuse me for my poor treat.”     46     a guest, you should make the host believe that there is plenty to eat by admiring the food.

While eating, the elders will use chopsticks to pick up food for guests as a     47     (traditional) and ask them to eat more. You should accept their goodwill readily. But nowadays, the younger people do the traditional way     48     (little).

After dinner, tea and fruit are usually served. When the guests want to leave, the host may still politely ask them to stay. They don’t have to take it     49     (serious) and they can try to find a good time to leave. This doesn’t mean that     50     (leave) early is always a good idea as the host may feel that the guests are not satisfied with the treat. Finding the right time to leave depends on the situation.