Such good use had beenhis spare time his English has improved a lotA. made of; asB. made

问题补充：

Such good use had beenhis spare time his English has improved a lot．

A. made of; as

B. made of; that

C. made in; that

D. found in; as

答案：

A. made of; as

(答案→)B. made of; that

C. made in; that

D. found in; as

解析：句意为：他如此充分利用他的业余时间以至于他的英语有了很大的进步。第一空考查短语make good use of充分利用；而且使用的是这个词组的被动式，第二空考查句型such...that“如此……以至于……”的用法。所以选B。