C. had been... would be
11. It is imperative that this letter
A. were sent
12. I wish I
D. was... would have been
Immediately
C. be sent
B. sent
D. send
more English
B. knew
A. know
C. did know
D. have known
13. It's
other than Tom!
B. none
14. "What would you like for your birthday?"
...
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