If we ______ take environmental problems seriously, the earth _______ worse and worse.
A．don’t; will beB．won’t; isn’t
C．won’t; isD．don’t; won’t be
A

試題分析：句意：如果我們不嚴(yán)肅對(duì)待環(huán)境問(wèn)題，地球就會(huì)變得越來(lái)越糟糕。結(jié)合語(yǔ)境可知主句描述的是將來(lái)動(dòng)作，故用一般將來(lái)時(shí)態(tài)。當(dāng)主句描述將來(lái)動(dòng)作時(shí)，英語(yǔ)條件狀語(yǔ)從句中一般用一般現(xiàn)在時(shí)態(tài)。選A。
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