📘 Quiz

Solution: Step 1: Analyze the tenses used: 'It was...a shock' (simple past) and 'she has...recovered' (present perfect). Step 2: The present perfect tense ('has recovered') indicates an action that began in the past and continues up to the present or has an effect on the present. Step 3: The adverb 'later' simply means at a subsequent time, which doesn't strongly connect the recovery to the continuous timeframe implied by the present perfect. Step 4: Consider the options: * 'since': often used with the present perfect to indicate 'from a past time until now'. This creates a strong link between the past shock and the ongoing or completed recovery up to the present. * 'then': refers to a specific past time, usually after another event. * 'afterwards': similar in meaning to 'later'. Step 5: 'Since' most effectively aligns with the present perfect tense to show that the recovery began after the shock and has continued/concluded up to the present moment. Step 6: Therefore, 'since' is the correct improvement.