1 . The coal workers have their lungs examined to _______(确保) their health. (根据汉语提示单词拼写)

2 . During the journey, their boat began to ______(下沉) (根据汉语提示单词拼写)

3 . Employees can choose to put a certain amount of their salary into a bank account and w________the money when they retire. (根据首字母单词拼写)

4 . As is known to us all, it’s a virtue to f________ and forget. （根据首字母单词拼写）

5 . The coach is able to f________on the kids while the other parents are relieved to be off the hook for another season. (根据首字母单词拼写)

6 . I need to have a second test to c___the diagnosis. (根据首字母单词拼写)

7 . Mom needs to e________ that the food offered is good for the child to eat.(根据首字母单词拼写)

8 . I need to have a second test to ________(确认) the diagnosis. (根据汉语提示单词拼写)

9 . The two countries began to ________(保持)close relations in 1987. (根据汉语提示单词拼写)

10 . Her attempts to ________them down only made matters worse. (用适当的词填空)