11．At that time people would starve if food was difficultto find（find）．

分析 在那個(gè)時(shí)代，如果難以找到食物人們將會餓死．

解答 答案是to find．考查不定式．food was difficult to find 是"主語+be+adj．+不定式"結(jié)構(gòu)，其中food是find的邏輯主語．句意是：在那個(gè)時(shí)代，如果難以找到食物人們將會餓死．故答案是to find．

點(diǎn)評 本題考查單詞填空．首先要根據(jù)語境明確句意，然后再根據(jù)相關(guān)語法決定正確答案．

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