It is very important for English teachers to have a knowledge of the theories of language_______. 
#5378
A
fluency
B
accuracy
C
acquisition
D
punctuation
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From his       looks, we can decide that he’s come across       problems.
#6563
A
puzzling; troubled
B
puzzling; troubling
C
puzzled; troublesome
D
puzzled; troubled
The detective_____the spy to_______.
#6891
A
killed...dead
B
shoot......die
C
fired...dying
D
shot...death