高手看过来：请问答案并说明为什么I will give a talk tomorrow,but I don’t know

高手看过来：请问答案并说明为什么I will give a talk tomorrow,but I don’t know 为什么I don't know if it will rain tomorrow I don't know _____ it will rain tomorrow.A.if B wether 为什么? I don't know if Mr.Green_______(come) tomorrow,but I will le I don't know her.I'll give it to ber.为什么这两句都用her呢?说明 I don't know if he will come tomorrow. Will she be back tomorrow?I don't know I don’t know if i will be free tomorrow.if i am free,i will I don't know ____ Mike will come to see me tomorrow.A that B I don't know whether she(A.calls me\B.will call me) tomorrow I don't know [ ] this evening.答案为什么选a? i don't know how to talk you but i just know you and me are