You can’t imagine _________ great trouble we have taken _________ enough food and water to those suffering the terrible disease．A.what; to provideB.so; to supplyC.how; to giveD.what; to supplying
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B解析句意为：你无法想像我们费了多大的劲向遭受严重疾病的人们提供足够的食物和水。we have taken 是定语从句修饰先行词trouble, 构成take great trouble to do sth．。提供某人某物用provide sth．for sb．或supply sth．to sb．。