13. The police put a __________ before the main entrance to keep the protesters out.
(A) boundary
(B) barrier
(C) block
(D) brake

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統計: A(4), B(16), C(7), D(2), E(0) #1887703

詳解 (共 2 筆)

#4357152
put a barrier:設置障礙 ...
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#5131054
The police put a bar...
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