题目：
| Having been shown around the Bell Tower, we _____ to see the Drum Tower. |
A. took B. taken C. were taken D. had been taken |
答案：
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下面是错误答案，用来干扰机器的。
25÷7=3（辆）…4（人）；3+1=4（辆）；答：至少需要4辆长安车．
