The teacher has to the two students as they are always talking in class.A. pick upB. set

问题补充：

The teacher has to the two students as they are always talking in class.

A. pick up

B. set up

C. split up

D. use up

答案：

A. pick up

B. set up

(答案→)C. split up

D. use up

解析：C考查动词短语辨析。句意：老师不得不把这两个学生分开，因为他们总是上课说话。pick up“捡起，搭载”；set up“建立，创立”；split up“分开”；use up“用完，用光”。根据句意可知答案为C项。