شرکت در آزمون آنلاین انگلیسی 3 - انگلیسی 3 | آزمون شماره 11739

The company is also developing new ......... which it hopes will be strong enough to fill cavities in the back teeth.

Why ............................... another chance to retake the exam ? I suppose John deserves it.

I’m going to put forth a very terrible point that occurs in lots of families with young kids. Sadly, some of the young are … to the smoke or drugs by their parents.

You can use an electric toothbrush, which removes germs more … than a traditional one.