1 . Would you like some gum to c________? (根据首字母单词拼写)

2 . Our high living standards cause our current population to c________ 25 percent of the world’s oil. (根据首字母单词拼写)

3 . This planet is unable to s________ human or plant life. (根据首字母单词拼写)

4 . This year’s harvest is insufficient to s________ a growing population. (根据首字母单词拼写)

5 . It proved particularly difficult to s________ the interest of the older children. (根据首字母单词拼写)

6 . He seems to find it difficult to s________ relationships with women. (根据首字母单词拼写)

7 . The economy looks set to _________ (维持) its growth into next year. (根据汉语提示单词拼写)

8 . There wasn’t enough space to a________ the files. (根据首字母单词拼写)

9 . The state cleared the way for companies to sell or rent out self­driving cars, and for companies to ________ (经营) driverless taxi services. (根据汉语提示单词拼写)

10 . Nobody is willing to recommend them ______ (have) a balanced diet. (所给词的适当形式填空)