a) has been
The autumn has been very rainy this year.
Обычно при наличии в предложении this (morning, day, year, etc.) используется present perfect. Поэтому ответ has been
The autumn has been very rainy this year
a) has been
The autumn has been very rainy this year.
Обычно при наличии в предложении this (morning, day, year, etc.) используется present perfect. Поэтому ответ has been
The autumn has been very rainy this year