考点拓展猜押 —— 连词
( )1. —May I surf the Internet now?
—No, _______ you have finished doing your homework.
A. unless B. if C. because D. when
( )2. Nearly every child hates exams, _______ it’s necessary. It helps to check if you have learned the specific knowledge.
A. and B. but C. so D. or
( )3. Many people do not realize the importance of health _______ they have fallen ill.
A. until B. while C. when D. after
( )4. _______ they are very tired, they feel happy because they’ve finally finished their project.
A. Unless B. Though C. If D. When
