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He made a mistake, but then he corrected the situation _______ it got worse.

A. until      B. when

C. before      D. as

He made a mistake, but then he corrected the situation ________ it got worse.

A. until            B. when              C. before              D. as

 He made a mistake, but then he corrected the situation ______ it got worse.

A. until                B. when                    C. before           D. as

He made a mistake, but then he corrected the situation _______ it got worse.

A. until   B. when

C. before D. as

34. He made a mistake, but then he corrected the situation    _   it got worse.    

A. until    B. when    C. before    D. as

He made a mistake, but then he corrected the situation ______it got worse.

A. until　　                 B. when　　                C. before　                  D. as

He made a mistake, but then he corrected the situation ______ it got worse.

A. until                  B. when                C. before               D. as

He made a mistake, but then he corrected the situation ________ it got worse.

A. until　　　　 　 B. when　　　 　 C. before　　　　 　 D. as

He made a mistake, but then he corrected the situation    _  it got worse.

A．until             B．when             C．before            D．as