2. 外语
  3. The committee______ separated from their families for long periods of time in case that they let out the top secret.

The committee______ separated from their families for long periods of time in case that they let out the top secret.

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问题 The committee______ separated from their families for long periods of time in case that they let out the top secret.
选项 A、is
B、are
C、was
D、has been
答案B
解析 本题考查主谓一致，据题意，委员们与他们的家人被分开了很长时间，以防他们泄漏机密。committee应该是复数的含义，谓语动词用复数。
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