I don't know when he _(come)back.when he _(come)back,I will
I don't know when he _(come)back.when he _(come)back,I will
I don't know when he _(come)back.
I don’t know when it is that he will come back.
when _ he _ back.(come)
I don‘t know how soon he will come back
When he will come back
I will tell you when he will come back
I don't know when I will come back改为同义句
把复合句改成简单句:1.i don't know when i will come back.→i don't know
will he come back on Sunday?I don't know.(合并为一句)
he was watching tv when his mother come back home用i don't kn
--when will he come back,do you know?