It is said that bad living habits as well as dirty surroundings, stuffy rooms and some other factors ________ the wide spread of H1N1.
| A. result from | B. benefit from | C. devote to | D. contribute to |
It is said that bad living habits as well as dirty surroundings, stuffy rooms and some other factors ________ the wide spread of H1N1.
| A. result from | B. benefit from | C. devote to | D. contribute to |