So far a lot of tall buildings ________ in our city.


  1. A.
    are built
  2. B.
    were built
  3. C.
    have built
  4. D.
    have been built
D
解析：
so far常和同在完成時(shí)連用，本句主語是buildings，故使用被動語態(tài)。
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