Question

【题目】Jack won't do well in English ______ he works hard at it.

A. after B. if C. unless D. because

Answer 1

【答案】C

【解析】句意：杰克英语将会不好，除非他努力学它。A. after 在---以后； B. if如果； C. unless 除非； D. because因为；根据Jack won't do well in English和he works harder at it.之间的关系，应是除非；故选C。