The teacher told me that the earth round.A. wasB. isC. wereD. are turning

问题补充：

The teacher told me that the earth round.

A. was

B. is

C. were

D. are turning

答案：

A. was

(答案→)B. is

C. were

D. are turning

解析：考察时态。地球是圆的，这是一个客观事实，一般都用一般现在时态，故选B。