We’d better have a ___________ discussion if we go to a ___________ place for the class trip.

In order to do something meaningful, it’s necessary that you _______ determine what is really important.

He left here for Beijing in 1998 ,____I have heard nothing from her.

My _________brother is two years ________than me.

Did you stay up very late last night?——No，It was not 10 o’clock yet ____I went to bed