I was *under the impression* that searching for a needle in a haystack (or in this case, *a smiling ball among other unmarked balls* would be impossible. However, life has not *robbed my son of his optimism*. *From the time he was able to walk*, he has always enjoyed immersing himself in the joys of indoor playgrounds. *Swimming against conventional opinion*, he dove into the ball pool with gusto. Thankfully, Lady Luck did not *slam her door in his face*. *Five minutes into the search*, he found one smiling ball. I had to *congratulate him on his small success* 

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I have been slowly compiling preposition collocations on my blog: https://diaperfinancingfund.blogspot.com/2025/11/psle-english-prepositions.html