Вопрос по английскому языку:

Подскажите, пожалуйста, какие варианты подходят в этих предложения?
1. The company has laid off two..........workers.
a) a hundred, b) hundred, c) hundreds, d) a hundreds.
2. We`ve booked the seats for.....
a) seventh July, b) seven July, c) the seven of July, d) the seventh of July.
3. The Christmas is on.....
a) the seventh of January, b) seven January, c) the seventh January, d) seven of January.
4. He made.....in the property market.
a) millions, b) a millions, c) million, d) the million