问题

We are bound to solve the present severe problem, ________ we act intelligently and promptly.

A:even though
B:unless
C:as long as
D:in case

正确答案是：

同类题型

How long has John been here?— Two years, _______ he still has no friends

下列古代文化常识表述正确在一项是（）

You ______ pay too little attention to your reading skills, as they are so important.

Hello, this is Tina speaking. Is that Sam— Sorry, he isn’t here at the moment.

What did the teacher say to you just now? —She asked me ___.