پرسش‌های ابراهیم اشراقی

Cellulose, ........., is one of the many substances known as carbohydrates.  

Conditions required for seed germination include abundant water, an adequate  supply of oxygen, and ......... .  

Michael soon realized that his wife was ……… and that she would never have a child.

It’s difficult to ......... these statistics without knowing how they were obtained.  

The problem facing most tourists is ……… among so many possibilities.