They _______ arrive at the station before 12 o’clock, but they don’t appear now.

I really love this band!- ______ I’ve got every CD they’ve made so far.

I wonder if I can board the plane with this return ticket. — There _____be no problem. Your ticket is valid until the end of this month. [ ]

____ there a teacher —- No, ____.

I hope you liked the concert last night.— How on earth do you know I went to the concert I__________ you.