问题
选择题
30. The subway __________in our city, and I’m sure there will be fewer traffic jams in the future.
A．is building
B．is built
C．is being built
D．will build
答案
答案：C
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30. The subway __________in our city, and I’m sure there will be fewer traffic jams in the future.
A．is building
B．is built
C．is being built
D．will build
答案：C