1．This tool can be used in a ________ (多样化) of ways.
答案：variety
2．His public ________ (形象) is different from the real person.
答案：image
3．They went out for a walk on the rough ________ (小径，小道)．
答案：path
4．Fitness has now become an important ________ (要素) in our lives.
答案：element
5．The scientists will study the variety of trees in the wild and ________ (观察) which are fruiting.
答案：observe
