2. 外语
  3. The building of the new subway lines in the city has been ______due to lack of enough in- vestment.

The building of the new subway lines in the city has been ______due to lack of enough in- vestment.

admin2011-04-26  29
问题 The building of the new subway lines in the city has been ______due to lack of enough in- vestment.
选项 A、held up
B、held on
C、held out
D、held back
答案A
解析
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