Some people won’t realize the importance of their health they have lost it.A. forB. butC.

问题补充：

Some people won’t realize the importance of their health they have lost it.

A. for

B. but

C. until

D. as

答案：

A. for

B. but

(答案→)C. until

D. as

解析：句意：一些人直到失去了健康才意识到它的重要性。本题考查的是not…until 句型，“直到…才”。For为了；but 但是；as 作为。故选C。