Choose the correct pair of verb forms to complete the sentence: By the time the new stadium ___ to the public next May, the city ___ more than two million dollars on it.
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Верный ответ
- Cis opened / will have spent
Разбор
Step 1: The stadium does not open itself, so the first gap needs a passive form (be + past participle). Step 2: After 'by the time' in a clause about the future, English uses the Present Simple instead of a future form, so 'is opened' is correct and 'will be opened' and 'will have been opened' are not. Step 3: The main clause describes an action completed before a future moment, so it needs the Future Perfect 'will have spent'. 'will spend' does not show completion before that moment, and 'has spent' is a Present Perfect that does not fit the future context. Therefore 'is opened / will have spent' is correct.