پرسش‌ها با دسته‌بندی (زبان انگلیسی => زبان انگلیسی => گرامر)

تفاوت حال کامل و حال کامل استمراری و همچنین گذشته کامل و گذشته کامل چیست ممنون میشم با مثال توضیح بدین 

 We're having a barbecue next week, .......?

 Iron came from west Asia, although its routines of diffusion were somewhat different  ....... agriculture.  

کدام ننادرست ااست

They have settled but have remained not fully absorbed into the society around them 

Although Margaret Mead had several assistants during her long investigations of  Samoa, the bulk of the research was done by ……… alone. 

Over 1900 years ago, ………, who worked in Alexandria, Egypt, classified the stars  by their brightness.

The shrinking range poses ……… to Africa’s elephants.

 Although Margaret Mead had several assistants during her long investigations of  Samoa, the bulk of the research was done by ……… alone.  

 Not until a student has mastered algebra ……… the principles of geometry,  trigonometry, and physics.