Save / energy / one / best / way / conserve / natural / resources.

A. Saving energy is one of the best ways to conserve natural resources.

B. Saving energy is one in the best ways to conserve natural resources.

C. Save energy is one of the best ways to conserve natural resources.

D. Saving energy are one of the best ways to conserve natural resources.

E7- GS- Unit 10- Practice (4)