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

کدام یک از گزینه‌های زیر صحیح است؟

I have left my book in ....... and I would like you to get it for me.

Celluloid and plastics have largely replaced genuine ivory in the manufacture ....... buttons, billiard balls, and piano keys.

Celluloid and plastics have largely replaced genuine ivory in the manufacture ……… buttons, billiard balls, and piano keys.

Celluloid and plastics have largely replaced genuine ivory in the manufacture ……… buttons, billiard balls, and piano keys.

 When wood, natural gas, oil, or any other fuel burns, ……… with oxygen in air to  produce heat. 

I've just ....... that the price has gone up again.

In so-called nonfiction novels, a documentary style is combined with fictional  techniques ……… actual events and people.

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, .......?