请写出所给单词的正确形式以补全下面的句子。Teachers have to consider the increasing ____ (diverse) of reading materials.
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请写出所给单词的正确形式以补全下面的句子。The guide had to call off the camping trip because few of the ____ (travel) had the proper equipment.
请写出所给单词的正确形式以补全下面的句子。_____ (health) food is believed important to make a ____ (health) man.
请写出所给单词的正确形式以补全下面的句子。We must give ___ (consider) attention to the problem of pollution.
请写出所给单词的正确形式以补全下面的句子。People who perform with ___ (determine) and courage in a time of crisis are great leaders.