Выберите правильную форму. Настоящее совершенное или настоящее совершенное непрерывное1.Птицы уже улетели/летели на юг.2.Дети смотрели / смотрят мультфильмы уже 2 часа.3.У нас не было / не было отпуска в течение 5 лет.4.Дэвид занимается живописью/рисовал в своей студии с 10 часов.5. Их родители были / есть друзья с самого детства.​

1. If number of speakers decrease, some languages will be endangered.
2. If Internet reaches all corners of the world, English as the Net language will influence the culture of non-speaking countries.
3. If English keeps on being global, other languages won’t set foot on Internet. 4. The world’s linguistic experts will be alarmed if many languages disappear at an alarming rate.
5. If some tribes aren’t urbanized and assimilated into mainstream, their languages won’t die out.
6. Youngsters will be able to communicate with people from abroad, if they learn foreign languages.
7. If the EU wasn’t worried about endangered languages, they wouldn’t issue a special directive on preserving them.
8. If minority languages aren’t politically tolerated, they will be in jeopardy.
9. If the high number of languages spoken in the EU corridors, it would be like a Tower of Babel.
10. If English is the language of trade and diplomacy, it will be considered as lingua franca nowadays. 

Is there a garden around our house?
There isn't a garden around our house.

Is there a table and some chairs between the door and the window?
There isn't a table and some chairs between the door and the window.

Is there an armchair between the sofa and the cupboard?
There isn't an armchair between the sofa and the cupboard.

Is there a shirt and some sweaters on the shelf?
There isn't a shirt and some sweaters on the shelf.

Is there a long bench and a flowerbed in front of our house?
There isn't a long bench and a flowerbed in front of our house.

Are there some big empty buckets over there?
There aren't any big empty buckets over there.

Are there a lot of buses in front of the factory?
There aren't a lot of buses in front of the factory.

Are there two new cars behind the garden?
There aren't two new cars behind the garden.

Is there a new car in my yard?
There isn't a new car in my yard.

Are there many apples on apy dish?
There aren't many apples on apy dish.

Проверьте слово apy  в последнем предложении.