The student couldn’t what the teacher was trying to explain.A. knowB. graspC. learnD. get

问题补充：

The student couldn’t what the teacher was trying to explain.

A. know

B. grasp

C. learn

D. get

答案：

A. know

(答案→)B. grasp

C. learn

D. get

解析：动词辨析。A知道，了解；B掌握，理解，抓住；C学会；D得到；句意：学生不能理解老师想解释的内容。