پرسش‌ها با تگ (تست گرامر انگلیسی)

 What is your cousin?

کدام یک از گزینه‌های زیر صحیح است؟

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.

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

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

 In order to remain in existence, ……… must, in the long run, produce something  consumers consider useful or desirable. 

 The versatility of modern cross-country skiing equipment allows skiers ………  technique to diverse terrain.