Rewrite the following sentence according to the instructions given in brackets:
As soon as the sports meet ended, the children ran on the field.
(Begin: Hardly {Fill_Regular})

Before starting we must detain mind that we've to vary the sentence without changing its meaning.
Now, the word hardly is used at the start of a sentence before an auxiliary (as told earlier), indicating that one thing happens very soon after another thing. for instance – ‘Hardly had the rain stopped, when the sun came out’.
Now, keeping in mind the above-given explanation we will change the sentence and start with ‘hardly: here, we are going to use hardly before an auxiliary- had this can change the sentence into –
‘Hardly had the sports meet ended, when the youngsters began running on the field’.