I don't know when he _(come)back.
I don't know when he _(come)back.
I don't know when he _(come)back.when he _(come)back,I will
I don’t know when it is that he will come back.
I don‘t know how soon he will come back
will he come back on Sunday?I don't know.(合并为一句)
I don't know if he will ___(come)back.If he___(come)please t
把复合句改成简单句:1.i don't know when i will come back.→i don't know
I don't know when he ____ back tomorrow.Don't worry,I 'll ca
I don't know () come back soon. ()back ,I‘ll let you know
.--Do you know when he ___ back --Sorry ,I don”t .When he __
I don't know when I will come back改为同义句
【初三英语从句】I don't know if he ______(come) back,if he _______(c