. I am concerned we should be brave and we will reach the top of the hill at last we tr

问题补充：

. I am concerned, we should be brave and we will reach the top of the hill at last we try our best to climb the hill.

A. So long as; as long as

B. As far as; as longer as

C. So long as; as far as

D. As far as; as long as

答案：

A. So long as; as long as

B. As far as; as longer as

C. So long as; as far as

(答案→)D. As far as; as long as

解析：可联系答.案.网客服索取。