lt is n ecessary ___ you to comply with our shipp ing in structi ons.

衡量教育经验总结中的研究对象是否具有代表性的标准有：____________、____________和_____________。

先进教育经验的理论化具体分以下三步：____________、____________和____________。

We shall ope n an L/C ____ you favor _____ Barclay's Bank here ___ the exte nt of 15000.

We shall can cel the con tract if you fail to ope n the relative L/C ____ the end of this year.

There is always a ready market ____ Sewing Machi nes, provided they are ___ good quality and competitive in price.

课题研究内容的表述，可以有不同的思路。有的是按____________研究、现实研究和____________研究三个维度安排研究问题的序列。有的是按理论问题研究和_____________问题研究作为表述研究内容的主线。

0w ing ____ unu sual shortage of stock, this offer is made, subject to the goods being un sold.

We note from your letter of September 10th that you are interested ____ walnut meat.