Определите временные формы глагола-сказуемого. Переведите предложения. 1) They are a friendly family. 2) Spring has come.

1. They are a friendly family. Present Simple. Они дружная семья. 2. Spring has come. Present Perfect. Весна пришла. 3. For many centuries economists have been dividing economic theory into macroeconomics and microeconomics. Present Perfect Continuous. На протяжении многих веков экономисты делят экономическую теорию на макроэкономику и микроэкономику. 4. The price for small computers had fallen. Past Perfect. Цена на маленькие компьютеры упала.