Исправь и напиши правильные предложения: 1) There are eight in a

Исправь и напиши правильные предложения:
1) There are eight in a week.
2) There are six colours in the rainbow.
3) There is one 0 in "ciassroom".
4) There are sixty copecksin a rouble.
5) There are four months in summer.
6) There are thirty days in January.
7) There are three bs in "biackboard"/