The article suggests that when a person____under unusual stress, he should be especially careful to have a well - balanced diet.

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问题 The article suggests that when a person____under unusual stress, he should be especially careful to have a well - balanced diet.

选项 A、is
B、were
C、be
D、was

答案A

解析 本题中所填谓语动词是宾语从句中时间状语从句中的谓语动词,不受前面动词的限制,该用什么时态的就用什么时态。从句表示一般将来时,因此应该用一般现在时,答案为A。
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