I find the lecture I attended in the Nanjing Normal University yesterday difficult _____. 
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A
understand
B
being understood
C
understood
D
to understand
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Can you imagine the actress ____ so much in public?
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A
admiring
B
admired
C
to be admiring
D
being admired
Our school forbids_____ ,that is to say, we are not allowed ____ at school.
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A
to smoke, to smoke
B
students’ smoking, smoking
C
students’ to smoke, smoking
D
students’ smoking, to smoke
____ in a key university is almost every high school student’s wish.
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A
Educating
B
To educate
C
Educated
D
Being educated
 ____by the horrible earthquake, many buildings needed to be repaired in the capital of Haiti.
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A
To be destroyed
B
Destroying
C
Destroyed
D
Having destroyed