2. Complete the sentences with the correct word in the proper form.
ski-doo • rapid • crack • covered • station • seal • drop • freezing • warn • scenery

1. You go along the river and speed down the rapids in your canoe.
2. In winter you can go down the slope with a …
3. … in the ice are very dangerous for mountaineers.
4. Scientific research … are scattered all over the world to study its nature and climate.
5. The most typical animals in Antarctica are the … and penguin.
6. Even in Europe the temperature may ... to minus forty in winter.
7. Who can really have a walk in such … cold!
8. The … and wildlife are exotic on the islands.
9. The river is … with ice and snow already in the beginning of October.
10. The weather forecast is … people about the coming gale.

1-2
2-4
3-1
4-3
5-6
6-9
7-7
8-10
.....................................................................

1. You go along the river and speed down the rapids in your canoe.
2. In winter you can go down the slope with a ski-doo.
In this sentence, we need a word that means a type of vehicle used for traveling over snow. The word "ski-doo" fits this description as it refers to a brand of snowmobiles. So, the correct word in the proper form is "ski-doo" as a noun.
3. Cracks in the ice are very dangerous for mountaineers.
In this sentence, we need a word that describes the breaks or openings in the ice. The word "crack" is the appropriate word in this context. However, we need to use it in the plural form "cracks" to match with the word "are". So, the correct word in the proper form is "cracks" as a noun in the plural form.
4. Scientific research stations are scattered all over the world to study its nature and climate.
In this sentence, we need a word that refers to places or facilities where scientific research is conducted. The word "station" fits this description as it refers to a fixed location equipped for a particular purpose, in this case, scientific research. So, the correct word in the proper form is "station" as a noun in its plural form "stations".
5. The most typical animals in Antarctica are the seals and penguins.
In this sentence, we need a word that describes the two types of animals that are typical or characteristic of Antarctica. The words "seals" and "penguins" are the appropriate words to use in this context. Both words are used as plural nouns to refer to the seal and penguin animals found in Antarctica.
6. Even in Europe, the temperature may drop to minus forty in winter.
In this sentence, we need a word that means a decrease or fall in temperature. The word "drop" fits this description as it refers to a sudden decrease in temperature. So, the correct word in the proper form is "drop" as a verb in the infinitive form.
7. Who can really have a walk in such freezing cold!
In this sentence, we need an adjective that describes the extreme coldness of the weather. The word "freezing" fits this description as it means extremely cold. However, we need to use it in the proper form, so it should be "freezing" as an adjective, relating to cold weather.
8. The scenery and wildlife are exotic on the islands.
In this sentence, we need a word that means the natural features or view of a specific place. The word "scenery" fits this description as it refers to the natural beauty of a particular location. So, the correct word in the proper form is "scenery" as a noun.
9. The river is covered with ice and snow already in the beginning of October.
In this sentence, we need a word that means the surface of something is completely overlaid or coated by a specific substance. The word "covered" fits this description as it means to have something on top of it. So, the correct word in the proper form is "covered" as an adjective describing the river surface.
10. The weather forecast is warning people about the coming gale.
In this sentence, we need a word that means a statement or prediction about future weather conditions. The word "forecast" fits this description as it refers to a prediction or estimation of future weather conditions. So, the correct word in the proper form is "forecast" as a noun. However, we need to use it as a modifier for the word "weather", so it should be "weather forecast". The sentence also mentions that the forecast is informing or cautioning people about the upcoming gale. Therefore, we need a verb that means to inform or notify someone. The word "warn" fits this description as it means to inform someone in advance about potential danger or problem. So, the final correct word in the proper form is "warn" as a verb, with the sentence being "The weather forecast is warning people about the coming gale."