Ifwewanttosaveourhome,moreattentionshouldbepaid

問題詳情：

 If we want to save our home, more attention should be paid ________ our earth from ________.

A. to prevent; being polluted    B. to preventing; being polluted

C. to prevent; polluting    D. to prevent; polluted

【回答】

B

知識點：非謂語動詞

題型：選擇題