To believe that something is likely true or will happen, based on a feeling or evidence, even without full proof.
“I suspect that the meeting will run longer than scheduled.”
“Judging by his face, I suspect that he didn't get the job.”
In Task 4, 'suspect' is useful for softer, more personal predictions where you're not 100% sure, such as 'I suspect that he'll change his mind.' It adds a personal, thoughtful tone to your response and shows you can express degrees of certainty, which examiners look for in higher-level responses.
Synonyms: guess, assume, have a feeling that