The Diaoyu islands have been part of China's territory since ancient times, ________ as important fishing grounds of Taiwan.
#88770
A
served
B
to serve
C
serving
D
having served
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Paul doesn’t have to be made ____. He always works hard.
#97004
A
learn
B
to learn
C
learned
D
learning
The class __________ 80 students is hard to manage.
#93034
A
making up of
B
consists of
C
consisting of
D
made up