单项选择题

Mr. Hal! understands that ______ maths has always been easy for him, it is not easy for the students.

A. unless
B. since
C. although
D. when
<上一题 目录 下一题>
热门 试题

单项选择题
______ , this kind of disease can do great harm to people there.
A. Occurring where
B. It occurs where it is
C. Where does it occur
D. Wherever it occurs
单项选择题
According to the rules of the factory, you mustn't ask for leave ______ you have a doctor's note.
A. unless
B. on condition
C. though
D. until
相关试题