Read the passage and fill in the gap with a suitable word in the box. (3 pts)

much - brush - starts - carefully - causes - many - food - lose

Tooth decay (1) ..................... early in life. It continues throughout adult life, so many of us (2) .................. quite a few of our teeth by the time we reach old age.

There are two (3) ......... ...... of tooth decay. One cause is that many of us don't take proper care of our teeth. Besides that, we eat a lot of sugary (4) ..........................., thus result in tooth decay. Ever since we are young, we should be encouraged to (5) ......................... our teeth properly and regularly. However, most of us don't pay (6)

.............. attention to this advice and neglect our teeth.