【C15】A．UnlessB．IfC．BecauseD．Since

【C15】

A．Unless

B．If

C．Because

D．Since

请帮忙给出正确答案和分析，谢谢！

您可能感兴趣的试题

【C19】A．asB．ifC．becauseD．while

答案解析
【C6】A．UnlessB．IfC．ThoughD．As

答案解析
（) you work hard, you will certainly succeed.A. ThoughB. IfC. BecauseD. For

答案解析
【C15】A．unlessB．so thatC．provided thatD．in order that

答案解析
【C6】A．unlessB．ifC．asD．since

答案解析
【C10】A．asB．ifC．becauseD．while

答案解析
A．untilB．ifC．thoughD．since

答案解析