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We arrived at work in the morning and found that somebody ________ into the office during the night.

A．broke 

B．had broken

C．has broken 

D．was breaking

We arrived at work in the morning and found that somebody _____ into the office during the night.

A.broke　　　　　　　　 B. had broken　　　　 C.has broken　　　　 D.was breaking

We arrived at work in the morning and found that somebody ______ into the office during the night.

A. broke　　　　 B. had broken　　　 C. has broken　　　 D. was breaking

We arrived at work in the morning and found that somebody ______ into the office during the night.（ ）

A. broke　　 B. had broken　　 C. has broken　　 D. was breaking

We arrived at work in the morning and found that somebody ______ into the office during the night.

A. broke　　　　 B. had broken　　　 C. has broken　　　 D. was breaking

We arrived at work in the morning and found that somebody        into the office during the night．

    A．broke              B．had broken            C．has broken     D．was breaking