Provide training in systematic methods so the team ______ its energy ______ the project. <br> <br>A、expend…to<br>B、expend…in<br>C、expend…on

Provide training in systematic methods so the team ______ its energy ______ the project.

A、expend…to
B、expend…in
C、expend…on

出自：国家开放大学英语机考

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