I saw _____old man walking across the street and ____old man looked worried.
A. an,an
B. the,the
C. an,the
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We can see the sun in _____ daytime, but we can't see it at ____ night.
A. a,the
B. the,/
C. a,/
______ have studied English in our school.
A. Most of students
B. The most students
C. Most of the students
I'm not looking at ____ .
A. the sun
B. sky
C. sun
I'll have to buy ______ trousers.
A. a
B. two
C. a pair of