I am trying my best to study English ________

试题详情及答案解析

I am trying my best to study English _________ I want to get the first place in the
following exam.

A．until

B．because

C．though

D．unless

答案：B

试题分析：until直到；because因为；though虽然，尽管；unless除非，如果不。句意：我正在尽最大努力学习英语，因为我想在接下来的考试中得第一名。结合语境可知选B。
考点：考查连词辨析