Special attention should be paid to ________ forests from fires in winter.
#92383
A
protected
B
protecting
C
protects
D
protect
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They have had a long and bitter struggle _____their living conditions.
#98367
A
to improving
B
for improving
C
to improve
D
improve
The building ______ next year will be a restaurant．
#97293
A
having been built
B
to be built
C
being built
D
built