Question

Beijing ________ a lot over the years. Now it has become one of the biggest
______ in the world.

A．changes; cities	B．changed; city
C．has changed; cities	D．changed; cities

Answer 1

C

解析試題分析：句意：這些年北京變化很多。現(xiàn)在它已經(jīng)成為世界最大的城市之一。與時(shí)間短語(yǔ)over the years.連用時(shí)，用現(xiàn)在完成時(shí)。由one of來(lái)修飾時(shí)，后面用名詞的復(fù)數(shù)形式。故選C。
考點(diǎn)：考查時(shí)態(tài)的用法。