Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word for each of the blanks.
We all know that jogging or running slowly ____(1) ___ long distances is good exercise for our ___(2) ___. It helps us keep fit and lose weight, makes the heart stronger, and even helps us feel better about ourselves. It costs almost nothing, ___(3) ___ a good pair of shoes to protect a jogger's leg and feet from the shock of the hard surfaces. A new kind of running shoes has just been introduced. The shoes____ (4 ) ______ designed by a team of researchers at the University of Calgary. The shoes, ____ (5) ______ are made of special materials, can reduce the damaging effects on a jogger's body.
A.healthful
B.health
C.healthy
D.healthily