Mr Black will come back from England in two days(对划线部分提问)

问题描述:

Mr Black will come back from England in two days(对划线部分提问)
划线部分是in two days.
-------- ------- ------- Mr Black -------back from England

When will Mr Black come back from England?
How long will Mr Black come back from England?
What time will Mr Black come back from England?