How many cups of coffee can you drink? (你可以喝多少杯咖啡？)

How many cups of coffee can you drink?
你能喝幾杯咖啡？
How many cups of coffee can you drink? (你能喝幾杯咖啡？)
你能喝幾杯咖啡？ (How many cups of coffee can you drink?)

How many cups of coffee can you drink?
你可以喝多少杯咖啡？
How many cups of coffee can you drink? (你可以喝多少杯咖啡？)
你可以喝多少杯咖啡？ (How many cups of coffee can you drink?)