.I fell down and broke three of my teeth. I wonder how many times I have to come here and get my false teeth _______.　

The traffic rule says young children under the age of four and ________ less than 40 pounds must be in a child safety seat.

At the age of 29, Dave was a worker,  _____ in a small apartment near Boston and ______ what to do about his future.

I feel greatly honored ____ into their society. 

There is a great deal of evidence _____  that music activities engage different parts of the brain.