1 . We have always __________ (维持) good relations with our customers. (根据汉语提示单词拼写)

2 . Keeping smile and ________(保持) a natural posture are important. (根据汉语提示单词拼写)

3 . The two countries have always ___________ (保持) close relations for the past two decades. (根据汉语提示单词拼写)

4 . Though now in college in Britain, he has m________close contact with his former classmates in Tianjin. （根据首字母提示拼写单词）

5 . To ________(保持) a good relationship, you must keep communication strong. (根据汉语提示拼写单词)

6 . The team is responsible for ________ (维修，保养) all the buildings. (根据汉语提示单词拼写)

7 . Food is necessary to __________ (维持) life. (根据汉语提示单词拼写)

8 . I m________ (维持) friendly relations with my neighbours. (根据中英文提示填空)

9 . There is an urgent need to take action to m______ (维持) the sustainable growth of ecosystem. (根据中英文提示填空)

10 . The Amazon forest contributes to _______(维持)the balance of the Earth’s ecosystem. (根据汉语提示单词拼写)