1.He will be back in ten days.空空空he be for?2.These visitors stayed here for half a month .空空空these vistors 空 here

1.He will be back in ten days.空空空he be for?2.These visitors stayed here for half a month .空空空these vistors 空 here
1.He will be back in ten days.
空空空he be for?
2.These visitors stayed here for half a month .
空空空these vistors 空 here

1.He will be back in ten days.空空空he be for?2.These visitors stayed here for half a month .空空空these vistors 空 here
He will be back in ten days.他会在十天内回来.
These visitors stayed here for half a month .这些旅客在这里呆了半个月.
一楼的" 这些游客会停留在这里半个月" 是将来时.但原句是过去时啊.

How long will
How long did stay

How long will he be for?
How long did these vistors stay here?

When will he be back?
How long did these vistors stay here?

1. How many days will he be back for?
2. How long did these visitors stay here?

他会在10天之内回来.
这些游客会停留在这里半个月.