In that school, English is compulsory for all students, but French and Russian are ______.
#18888
A
special
B
regional
C
optional
D
original
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The         old man is          my grandfather.
#34905
A
eighty-years-old; like
B
eighty-year-old; likes
C
eighty-year-old; like
D
eighty years old; likes
Many students signed up for the ____race in the sports meeting .
#18836
A
400-meter-long
B
400-meters-long
C
400 meters long
D
400 meter long