It is often recommended that children ________chances to get close to nature.
A．a(chǎn)re offeredB．be offeredC．should offerD．must be offered
B
考查虛擬語(yǔ)氣。Recommend推薦，建議，后面的賓語(yǔ)從句要用（should）+do的虛擬語(yǔ)氣，排除A,D；且主語(yǔ)children和offer之間是動(dòng)賓關(guān)系，所以用被動(dòng)語(yǔ)態(tài)。選B。
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