By the end of last year another new gymnasium in BeijingA. would be completed B. was being

问题补充：

By the end of last year another new gymnasium in Beijing

A. would be completed

B. was being completed

C. has been completed

D. had been completed

答案：

A. would be completed

B. was being completed

C. has been completed

(答案→)D. had been completed

解析：本题考查时态。by the end of 后接表示过去的时间在句中作时间状语时，句子谓语动词使用过去完成时。