The concert by Lang Lang was so well ______ that all the tickets had been sold out on the first three days last month.

I found my mom not feeling well this morning. I’mafraid she is ill.— _______.

Only when the teacher walked into the classroom ________ that she had left the speech note at home.

Our headmaster will __________us in the discussion this afternoon.

Nobody has the right to laugh at others _________ he is right.