Keeping the environment clean is very important.
–> It is
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-> $\text{It’s very important to keep the environment clean}$.=> $\text{From ( cấu trúc )}$:$\text{+) V_ing + N + tobe + very + adj}$$\text{→ It + very + adj + to V + N + …}$$\text{Tạm dịch : Điều rất quan trọng là giữ cho môi trường sạch.}$
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Đáp án: It is very important to keep the environment clean.———————————————Giải thích:S / N + be + ADJ–> It is + ADJ + (for O) + to VTrans: Điều quan trọng là giữ cho môi trường trong sạch.#STMIN
