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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._______ in the leg, the soldier was sent to hospital.
#97617
A
Seriously injured
B
To be injured
C
Injuring badly
D
Having injured
____several times,but unfortunately,the boy still couldn’t smooth away the problem on his own.
#98193
A
Having been explained
B
The problem having been explained
C
The problem had been explained
D
Although the problem had been explained