They don’t know what ___________ the problem .

There is still________ who said he was ________ to reach the top of the mountain besides these two people.

Li Zhai has been watching the Korean TV series Temptation of Wife the whole night.— ________. [ ]

It ______ to me that I should go to attend a meetingwhen I was about to go home．

Tom _______ up early. But now he gets up very late.