We won’t give up we should fail 10 times.A. even ifB. sinceC. whetherD. until

问题补充：

We won’t give up we should fail 10 times.

A. even if

B. since

C. whether

D. until

答案：

(答案→)A. even if

B. since

C. whether

D. until

解析：本题的含义是即使我们失败了十次，我们也将不放弃，even if表示让步，尽管的意思，故本题选A。