问题
单项选择题
On careful examination of your samples, we found that the cotton piece goods are well ______ standard in quality.
A．until
B．up to
C．in
D．into
答案
参考答案：B
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On careful examination of your samples, we found that the cotton piece goods are well ______ standard in quality.
A．until
B．up to
C．in
D．into
参考答案：B