Question

1. Why don't you call a policeman? ( Make it a statement using a Modal Auxiliary

showing 'duty'.
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Answer 1

Explanation:

The Modal Auxiliary in the aforementioned sentence is 'could'. ... Also, the Helping verbs or auxiliary verbs such as will, shall, may, might, can, could, must, ought to, should, would, used to, need are used in conjunction with main verbs. They are used to express shades of time and mood