1H
+1
2He
0
3Li
4Be
+2
5B
+3
6C
+4﹣4
7N
+5﹣3
8O
﹣2
9F
﹣1
10Ne
11Na
12Mg
13Al
14Si
﹣4
15P
16S
+6﹣2
17Cl
18Ar
请分析信息并回答下列问题：
选字填空。(写序号)
—I've decided to quit this job，but I'm afraid I won't be able to find a better one.
—________.You never know until you try.
