The teacher has a(an) to get off topic; sometimes it is difficult for students to make ou

问题补充：

The teacher has a(an) to get off topic; sometimes it is difficult for students to make out what he is saying.

A. concern

B. determination

C. intention

D. tendency

答案：

A. concern

B. determination

C. intention

(答案→)D. tendency

解析：词义辨析. A. 关心 B.决心 C.意图;目的 D.倾向;癖好.句意:这个老师有个跑题的癖好;有时很难让学生明白他正在说什么。选D。