Achieving a high degree of proficiency in English as a foreign language is not a mysterious _____  without scientific basis.
#7413
A
process
B
practice
C
procedure
D
program
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This is my old photo of my aunt’s when she had _____. And now she has a few _____.
#7290
A
short hair; grey hairs
B
short hairs; grey hair
C
short hair; grey hair
D
short hairs; grey hairs