Question

【题目】There _______ great changes in our hometown in the past fifteen years.
A.has been
B.have been
C.was
D.were

Answer 1

【答案】B
【解析】句意：在过去的十五年里我们的家乡发生了巨大的变化。根据 in the past fifteen years可知，本句应该使用现在完成时：have/has +过去分词;由于真正的主语是great changes，故用have，所以本题选B。