Unemployment in some western countries is on the crease. A growing number of young people, ______, are finding themselves out of work.

I have to well prepare for the math test tomorrow because it ______ 30% of the final exam.

There are ______days in a year.

I have a lot of homework to do today, _________ I cannot go swimming with you.

Please pay attention _____ what your teacher says in class. [ ]