Would it be correct to say: The first few years of a child's life play a key role in their development
The first few years of a child's life play a key role in their development. or should it be The first few years of children's lives play a key role in their development.
There is a situation where I have never worked out the correct thing to do. For example, here is a sentence I just used in a comment on Stack Overflow: The 'strong disagreement' was about ...
Something seems off about this sentence, but I can't put my finger on it. The sentence in question: Which countries is Nicaragua competing with? Alternatives I considered: With which ...
I was trying to say "During one of my girlfriend's soccer games..." The problem is when I spoke it, it could be interpreted as "Out of all of my girlfriends... during one of their games this ...