Non-native speaker here, unable to understand the 'math stratergy'

hey everyone, i got the plus subscription and started with day 1 of 2 month plan. I started with quant (didnt have much of a problem, instead took a bit of time while doing 5lb problems. is this normal ?) and then started verbal video about the math stratergy but couldnt understand one bit of it.

I could find the the support (or contrast) word easily but then puzzled which word to pick after that. I got more confused when greg started searching for word in the direction of the blank(cuz he initially said to search for words away from the blank).

I thought this would be the community to post since we all go through the same material. If anyone’s got the solution to my problem then consider helping.

thanks.