How should I do when I meet new people 和 What should I do when I meet new people How 和What 都可以是不是用哪个都可以？

I can't decide _____.A.when to do it B.when to do C.when I should do D.how should I do it How should I do?用how对吗? How do I say I should how should i do 有没有语法错误 .How should I do it?急用. just test it,how should I do? It's time to decide what to do and ____A.when to do it B.when to doC.when I should do D.how should I do it【还要把为什么不能选这个答案的原因说一下.】 How should I do when I meet new people 和 What should I do when I meet new people How 和What 都可以是不是用哪个都可以？ what shoul i do what should i do 还是how should i do when the chance has came ,we should how to do Can you tell me () I should do to help save these animals?A.what B.how C.when D.why i want to know how should i do要中文 I abandoned myself to despairwhat should I do?how? when i am in my blue,what should i do? What should I do when i have a fever what should I do when I meet new people? What should I ______ (do) when I am in trouble? ---What did your parents think about your decision?---They always let me do ____ I think I should.A.when B.that C.how D.what