Thereareoversix________students_____partintheentranceexaminDongchengonMaythesecond.

Americaisan__________country.Youcanhear__________everywhere.

取得外经贸经济效益的客观基础是______

Onewaytounderstandthousandsofnewwordsistogain__________goodknowledgeofbasicwordformation.

I'llneverdo______.

SHECA指的是（）

Thespeechisstronglyimpressed________mymemory.

设α1，α2，α3，α4都是3维向量，则必有()

Iwantyour_________,sir.Idontknowwhattodo.

对外贸易价格最基本的职能是()。