At present English is the main subject here. A. to be taughtB. being taught C. teaching

问题补充：

At present, English is the main subject here.

A. to be taught

B. being taught

C. teaching

D. to be teaching

答案：

A. to be taught

(答案→)B. being taught

C. teaching

D. to be teaching

解析：. being taught表示“正在被教授”。