Questions (1 to 2): Fill in the blank with right option.
1. Lack of exercise and high fat diets have — to be factors in heart attacks.[Assistant Engineer (IT) 2016 [MCQ] : 2016]
[Assistant Engineer (IT) 2016 [MCQ] : 2016]
[Assistant Engineer (IT) 2016 [MCQ] : 2016]
[Assistant Engineer (IT) 2016 [MCQ] : 2016]
[Assistant Engineer (IT) 2016 [MCQ] : 2016]