VII.Fill the blank with right subject or verb of the text.
Lightning occurs in hot, wet storms. Moist air is driven up to a great height. It forms a type of cloud called cumulonimbus. When the cloud rises high enough, the moisture freezes and ice crystals and snowflakes are formed. These begin to fall, turning to rain on the way down. This rain meets more moist air rising, and it is the friction between them which produces static electricity. When a cloud is fully charged with this electricity, it discharges it as a lightning flash.
Subject Verb
Lightning occurs
Moist air driven up
The moisture freezes
When a cloud rises
………it discharges it as a lighting flash
Lightning occurs in hot, wet storms. Moist air is driven up to a great height. It forms a type of cloud called cumulonimbus. When the cloud rises high enough, the moisture freezes and ice crystals and snowflakes are formed. These begin to fall, turning to rain on the way down. This rain meets more moist air rising, and it is the friction between them which produces static electricity. When a cloud is fully charged with this electricity, it discharges it as a lightning flash.
Subject Verb
Lightning occurs
Moist air driven up
The moisture freezes
When a cloud rises
………it discharges it as a lighting flash
cloud - rises
snowflakes - formed
rain - meets
moist air - rising
cloud - charged