پرسش‌ها با تگ (تست گرامر)

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.

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

The chemical facts ……… as a by-product of their search for gold became the basis  for modern chemistry.  

Recently, severe management problems have afflicted Coca-Cola, ………

During the course of its growth, a frog undergoes a true metamorphosis ……… with  a fishlike larval stage.