C1 Advanced Key Word Transformations Practice Test 2025 – Your All-in-One Guide to Exam Success!

The chosen answer conveys a sense of a lost opportunity due to forgetfulness. When someone states, "I have no memory of bringing my wallet," it directly reflects a lack of recollection that implies they missed the chance to have their wallet with them. This presents the idea that there was an expectation or opportunity to have the wallet, but due to not remembering if it was brought, that chance has been lost.

In the context of the other options, while each mentions the wallet, they don’t fully encapsulate the concept of forgetting leading to a missed opportunity. For instance, stating "I lost my wallet last week" indicates an event that happened but doesn't illustrate the concept of forgetfulness leading to a lost opportunity. Similarly, "I forgot where I placed my wallet" indicates forgetfulness, but it does not emphasize the idea of not bringing it in the first place, which plays into the notion of loss of opportunity. Lastly, "I mislaid my wallet during the trip" describes the situation of misplacement but does not explicitly connect it to the act of forgetting before the trip, thus missing the opportunity to have it on hand when needed.