This new model not only saves time but also ___________ by operating on two batteries instead of four.

Câu hỏi :

This new model not only saves time but also ___________ by operating on two batteries instead of four.

A . saving energy

B save energy

C saves energy

D to save energy

* Đáp án

C

* Hướng dẫn giải

Phương pháp giải:

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