____ a postgraduate, i would at least master two foreign languages.
A. should i become
B. were i to become
C. had i become
D. i should become
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seldom ____ any mistakes during my past five years of teaching in this university.
A. would i make
B. i did make
C. should i make
D. did i make
____ she would have avoided the accident.
A. she was more careful
B. if she was more careful
C. had she been more careful
D. she had been more careful
____ forget my hometown and my happy childhood.
A. never i will
B. never will i
C. never i
D. i never have
I dare climb this tall tree, but _____?
A. do you
B. dare you
C. so do you
D. do you dare
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