【題目】Unless everyone ________ actions to stop pollution, the environment problem may become worse.

A. take B. takes C. took D. will take

【答案】B

【解析】句意：除非每個(gè)人采取行動(dòng)阻止污染，環(huán)境問(wèn)題可能更糟糕。Unless引導(dǎo)的條件狀語(yǔ)從句用一般現(xiàn)在時(shí)表示一般將來(lái)時(shí)，故選B。

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