I thought she was famous, but none of my friends have _____ heard of her [ ]

The government is devoting resources to establish public health systems________, the physical conditions of children have improved greatly[ ]

ys, sending e-mails to each other has become a way _____ what they think to others.

There are too many people in the supermarket. It’s _______.

Americans of all religions _____ Thanksgiving, a happy holiday on the fourth Thursday of each November.