a)
1. The region around the Great Lakes has changeable weather.
has - Present Indefinite Active Voice
Регион вокруг Великих озер имеет переменчивую погоду
2. The congress consists of the Senate and the House of Representatives.
consists - Present Indefinite Active Voice
Конгресс состоит из Сената и Палаты представителей.
3. The country had developed this industry before the war began.
had developed - Past Perfect Active Voice
began - Past Indefinite Active Voice
Страна начала развивать эту отрасль до начала войны.
b)
1. The capital of the country, Washington, was named in honour of the first President,George Washington.
was named - Past Indefinite Passive Voice
Столица страны, Вашингтон, был назван в честь Первого Президента,Джорджа Вашингтона
2. The USA is washed by the Pacific Ocean.
is washed - Present Indefinite Passive Voice
США омывают воды Тихого океана
3. He will be elected for four years.
will be elected - Future Indefinite Passive Voice
Он будет избираться на четыре года.