The lack of systematic data on volunteer work is not simply an academic matter. It also limits the ability to make the most effective use of this important resource.

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Because the lack of systematic data on volunteer work is not simply an academic matter, it limits the ability to make the most effective use of this important resource.

The lack of systematic data on volunteer work is not only simply an academic matter, but it also limits the ability to make the most effective use of this important resource.

Due to the lack of systematic data on volunteer work, it is now not only a simple academic matter but also limits the ability to make an effective use of this important resource.

Because the lack of systematic data on volunteer work limits the ability to make the most effective use of this important resource, it is not simply an academic matter.

Giải thích

Đáp án đúng là: B

Kết hợp câu sử dụng liên từ tương liên not only ... but also

Dịch: Việc thiếu dữ liệu có hệ thống về công việc tình nguyện không chỉ đơn giản là vấn đề học thuật mà còn hạn chế khả năng sử dụng hiệu quả nhất nguồn tài nguyên quan trọng này.