Year 9 Set 1 Full sentences

Long ago, a hidden underground volcano _____________ deep within the mountains.

The surrounding region had _____________ forests and vast open spaces.

Scientists had _____________________ their efforts on understanding the seismic activity beneath the earth’s surface.

The volcano, _____________________ active during certain seasons, had drawn the attention of many researchers.

The ____________________ in the area was not only of scientific interest but also a warning sign.

Understanding the volcano's behavior was _______________ to ensuring the safety of the nearby towns.

As time passed, the surrounding villages began to be _________________ by strange tremors.

________________ arrived in the region, eager to study the unusual phenomena.

They noted frequent underground ________________, but the intensity seemed to fluctuate.

The situation worsened, as the eruptions began to ___________________ increase in frequency.