15. It is requested that each of the teachers invited ______ a performance at the. party.
__________ the correct way of learning, and you must make much progress.
__________ Einsteins could not pay for __________ advanced education hat young Albert needed.
He insisted that all the work __________ within a week.
I always take something to read when I go to the doctor's __________ I have to wait.
—Do you mind me smoking here? —No, __________.