If something _ you,you can go to him for help A,If something _ you,you can go to him for helpA,worryB,to worryC,worryingD,worries原因

问题描述:

If something _ you,you can go to him for help A,
If something _ you,you can go to him for help
A,worry
B,to worry
C,worrying
D,worries
原因

d啦,sth是第三人称单数的,动词后面加s.