问题
选择题
It is reported that China will not buy the Euro debt until some thorough research ______.
A．will be done
B．had been done
C．has been done
D．will have been done
答案
答案：C
考查时态。该句为时间状语从句，在从句中要用一般现在表将来，所以选择C，
意为据报道，中国不会购买欧洲的债券，直到做了一些彻底的研究之后。
