Many people are homeless in the Chileearthquake and ______ help

I’ll never forget the day _______ I bought my own guitar with my own money.

Alice, you look puzzled, Have you understood it?—Yes．I _____another problem just now

Do you have any plans for the winter holiday— Since you are crazy about music, why not go to some ________ concerts

. —Have you paid your phone bill? — No, the bill is _____ at the end of the month.