Question

There __________great changes in our hometown in the past fifteen years.

A．has been

B．have been

C．was

D．were

Answer 1

B

试题分析：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。