Thousands of protesters () major roads in the central business area of the city for weeks, leading to much inconvenience for many Hong Kong citizens. ( 章节：3 难度：1)
- A、knocked off
- B、blocked off
- C、knocked out
- D、blocked out
正确答案:B
答案解析:有
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Thousands of protesters () major roads in the central business area of the city for weeks, leading to much inconvenience for many Hong Kong citizens. ( 章节：3 难度：1)
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