Question

Fill in the blank with the most appropriate preposition:
It has been raining heavily _________ morning.

• A. since
• B. for
• C. from
• D. in

Answer 1

The correct option is A since

Options A and C: 'Since' refers to the starting point of an action. It relates here, as it's given that it started raining in the morning, and has rained ever since.
In contrast, 'from' is generally not used when only the starting time is given. It is mostly used when the start and end both are mentioned: 'It had been raining from morning to evening.'
Hence option C is incorrect.
Option B: 'For' indicates a period of time: 'It rained continuously for two hours.' There is no period or duration mentioned, hence, it won't be used here, and B is wrong.
Option D: 'In', when spoken in terms of time, refers to an action that happened in the past (was raining in the morning), or will happen in the future (will rain in the evening). But, it does not refer to an action that began in the past and is still continuing: has been raining.
Hence, option D is incorrect.