11. It was _____ I reached there _____ I began to know something about the matter.

A. until, when              B. until, that

C. not until, that           D. not when, that

12. It was _____ my father worked _____ I work now.

A. where, that              B. where, when

C. that, where              D. that, that

13. It was not until he came back ______ he knew the police were looking for him.

A. which                     B. since

C. that                         D. before

14. It’s more than half a century ______ the People’s Republic of China was liberated.

A. when                       B. that

C. since                        D. after

15. It was not ______ you had explained how ______ I managed to do it.

A. for, that                    B. until, that

C. for, when                  D. until, when

【參考答案】(from www.hz123456.com)

1—5 BCAAC  6—10 CBCCD  11—15 CACCB

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