单项选择题
We must have the goods not later than 20th October （） our stock is running short.
A.when B.that C.which D.as
单项选择题 We should consider the said firm quite reliable for （） engagement as you mentioned.
填空题 （） for more than 30 years, we are confident we can give our customers complete satisfaction.
填空题 We are （） exporters of all kinds of Chinese goods.
