求解两题1、I don't know if he ____ to Kate's birthday party.He's

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求解两题1、I don't know if he ____ to Kate's birthday party.He's sure to go if he ____.
1、I don't know if he ____ to Kate's birthday party.
He's sure to go if he ____.
A.goes；knows B.will go；knows
C.goes；will know D.go；know
2、Do you know if he ____ tommrrow?
A.came B.comes
C.will come D./
要写出这道题的的选择理由，总之要有过程

1.B.will go；knows 第一空是宾语从句,根据实际情,if表示“是否”,意思是我不知道他是否回去Kate的生日派对；第二空条件状语从句,主句用将来时,从句用一般现在时,if表示“如果”,意思是他如果知道,就一定会去
2.C.will come 这一句同上面的第一空,宾语从句,tomorrow是关键词,从句是将来的时态.
再问：是不是只要if表示“是否”时就因为不是条件从句，不用主将从现，得要通过句子情景判断if表示“是否”，不知道我理解的对不对？谢谢
再答：我就是这么理解的

求解两题1、I don't know if he ____ to Kate's birthday party.He's 初中英语题24.I don't know if Tom _________ to Kate's birthday par he didn't ____in my birthday party,i don't know where he's g Tom will go to his friend's birthday party .He doesn't know- I don't know if he ____(be) free tomorrow. I don't know if he ____ ( come ) don't you know today is kate's birthday i don't know if Mr.Li.to the party.i think he will come if h I don't know if he ___(come) tomorrow.If he ____(come),I'll I don't know if he ___.if he ____,please tell me .(come) I don't know if he ( ) tomorrow 初中英语单项选择-If you don't go to Lucy's birthday party this eveni