Do you think which classroom is in our school?
A. clean
B. the cleaner
C. the cleanest
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Mr Zhang is one of in No. 1 Middle School.
A. the busiest teacher
B. the busiest teachers
C. the busy teachers
Of all the boxes, the red one is .
A. heavy
B. heavier
C. the heaviest
Our school is not so as theirs.
A. small
B. smaller
C. the smallest
Her grandmother was ill yesterday and she is today.
A. very ill
B. even worse
C. the worst