Question

Since then,our home town has become a new city.Everything                .

A. is changed    B. was changed

C. had changed    D. has changed

Answer

D

【解析】句意：从那时起，我们的家乡变成了一座新城市。一切都变了。A. is changed一般现在时的被动语态；B. was changed一般过去时的被动语态；C. had changed过去完成时；D. has changed现在完成时。change：改变，变化，既是及物动词也是不及物动词，可以有被动语态，通常“某物变了”用主动语态；根据时间Since then（从那时起）可知此句时态用现在完成时（动作发生在过去，对现在有影响），结合句意可知选D。