2.Not for a moment ________ the truth ofyour explanation about the event.
A. we have doubted
B. did we doubt
C. we had doubted
D.doubted we
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10. It was simply for some special reason __________ I didn't tell you the truth at that time.
A. why
B. that
C. which
D. so
11. ________he was seriously ill, I wouldn't have told him the truth.
A. If I knew
B. If I know
C. Had I know
Did I know
12. John has never been on time, _____________?
A. has John
B. hasn't John
C. has he
D. hasn't he
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