پرسش‌ها با تگ (تست گرامر)

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

Scientists believe the first inhabitants of the Americas arrived by crossing the land  bridge that connected Siberia and ......... more than 10.000 years ago.

I'd rather you ...... to her why we can't go.

Colloquialisms, ……… of informal spoken language, are often considered  inappropriate for more formal writing and language.

It was only ten days ago ...... she started her new job.

The saguaro, found in desert regions in the southwestern United States, ……… cactus in the world.

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

Because the metal mercury —— in direct proportion to temperature, it was once used as the indicator in common thermometers.

Much of northern Canada lies within the Arctic Circle, and ……… ice or the sparse vegetation known as tundra.