2. 外语
  3. Why a person has no friendships______ something that a survey cannot adequately explain.

Why a person has no friendships______ something that a survey cannot adequately explain.

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问题 Why a person has no friendships______ something that a survey cannot adequately explain.
选项 A、is
B、there is
C、are
D、they are
答案A
解析 The subject, the noun clause why a person has no friendships, needs a singular verb: is.
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