Nothing can be done _______ he returns.

Shuofang Airport, please. I have to be there by 7:00.— _________, but I’ll do my best.

The number of the cranes is getting ________. If we don’t help them ,they will disappear ______a few years

I heard that you really had a wonderful time at John’s birthday party, _____?

He didn’t make ______ clear when and where the meetingwould be held.