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
13. Do you know Tom bought a new car? I don't know,__________.
A. nor don't I care
B. nor do I care
C. I don't care neither
D. I don't care also