1. They began to construct the skyscraper 2 months ago.
=> They have constructed the skyscraper for 2 months.
2. The customers used this kind of special card.
=> This kind of special cards are used by the customers.
3. It is possible for him to book a hotel room by email.
=> He can book a hotel room by email.
Câu trả lời đây bạn nhé! CHÚC BẠN HỌC TỐT! CHO MÌNH CÂU TRẢ LỜI HAY NHẤT NHA !