don't know if he __.If he__,I will tell you为什么A.will come ,comes B.will come ,will come C.comes,comes

I don't know if he __ to the movie this evening.If he wants,so ___ I. What if I don't know anyone?同义句What __ __ __ if I don't know anyone I don't know if he __(come) if it ___(rain) tomorrow.请问第二个空该怎么解释? I don't know if he ____(be) free tomorrow. I don't know if he ____ ( come ) don't know if he __.If he__,I will tell you为什么A.will come ,comes B.will come ,will come C.comes,comes I don't know if he will come tomorrow i think he if he free I don't know if he_.if he _home,please let me know.(return). I don't know __ he will come tomorrow.___he comes,I'll let you know.A.whether;if B.if;whether C.when;whether D.that;if请做答并解释,最好说一下相近词的区别和用法 I don't know if he ___.if he ____,please tell me .(come) I don't know 同意句转I don't know.I __ __ __. I don't know if he will come tomorrow.为什么要用if 不能用whether i really don't know if he _____tomorrow.if he_____,please give me a ring(come) where is the railway station?I don't know.合并成一句 I don't know __ __ __ __ __. I don't know if Mr.Green_______(come) tomorrow,but I will let you know if he _____(come) tomorrow i don't know __ he took part in the walk__i don't know why he took part in the walk.同义句,横线处填什么 1.if she __(come)to beijing next week.2.__(call)me up,if he has any problem1.let him__(do)his own things.2.half the people __(not have) their ID cards here.3.she will goes there as soon as he ___(leave) 4.half of the appie _(go)bad.5.i don't know if I don't know if he ___(come) tomorrow.If he ____(come),I'll tell him about it