Question

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

A．for

B．but

C．until

D．as

Answer 1

C

试题分析：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。