Counterfactual thinking usually negates events that have already occurred in the mind, and then characterizes them as psychological activities that might have occurred but have not occurred in reality. According to the direction of occurrence, counterfactual thinking can be divided into upward counterfactual thinking and downward attack. Integral thinking, upward counterfactual thinking, is for events that have occurred in the past. Imagine that if certain conditions are met, there may be better results than real results; downward counterfactual thinking is for events that have occurred in the past. Imagine that if you meet some sort of speculation, you may have worse results than the real results. According to the above definition, which of the following is a downward counterfactual thinking? ['If you review it then, you can pass this exam.', 'If I play a little worse, I miss the medal.', 'If the grandfather is still alive, he must not want to see this situation today.', "If we didn't bring so many things, we can run faster now."]