31-35ACBAD　 36-40DBCBC　 41-45 ACBDB　　 46-50ABCAA

　16-20 ADBAC　　　 21-25 BDACA　　　　　 26-30 CBDCD

　1-5 BACCA　　　　 6-10 BCABA　　　　 11-15CBBAB

30.　 It _____ we had stayed together for a couple of weeks ____ I found we had a lot in common.

A. was until; when　 　　　　　　　　　B. was until; that

C. was not until; when　　 　　　　　　　D. was not until; that

29. Gorge couldn’t remember when he first met Mr. Anderson, but he was sure it was _____ Sunday because everybody was at _______ church.

A. /; the　 　　　　 　B. the; /　　　　　　　　 C. a; /　　　　　　　　 　 D. /; a