---Tom is so worried about the test that he said he was going to study all night.----Tell

问题补充：

---Tom is so worried about the test that he said he was going to study all night.

----Tell him he should quit and get some help.

A. to have worried

B. to worry

C. worring

D. from worrying

答案：

A. to have worried

B. to worry

(答案→)C. worring

D. from worrying

解析：考查非谓语动词。quit“放弃，停止”，quit doing sth.“停止做某事”。故选C。