Electric trains have now steam ones in most countries in the world.A. took the place ofB.

问题补充：

Electric trains have now steam ones in most countries in the world.

A. took the place of

B. in place of

C. taken the place of

D. instead of

答案：

A. took the place of

B. in place of

(答案→)C. taken the place of

D. instead of

解析：考查词组：in place of代替，介词短语， taken the place of取代，动词短语，D. instead of而不是，介词短语，这里需要动词短语做谓语，而且是过去分词形式，句意是：在世界上的很多国家电动火车已经代替了蒸汽火车。选C。