Complete using the present simple or the present continuous. It usually _______ (rain) on market day, but today it _______ (not rain).

The correct answers are 'rains' and 'is not raining'. The first part of the sentence uses 'usually', indicating a habitual action, so we use present simple. Since the subject 'it' is singular, we need to add 's' to the verb 'rain'. The second part of the sentence describes what is happening today, a single, specific moment. This requires present continuous. 'Not rain' becomes 'is not raining'. Therefore, the completed sentence is: 'It usually rains on market day, but today it is not raining.'