— I missed the earliest flight in the morning. It was really a pity. —You _________ to the airport by taxi instead of by bus.

Food safety is important. Rules____ to stop people from food pollution.

— I heard they went skiing in the mountains last winter. — It ________ true because there was little snow there.

---Do you know how this disabled man succeeded in running such a big company?--- I don’t know , but I think he __________ many difficulties.

--Guess what! Tan Weiwei failed in the last round of the Super Girl Contest.---How _______ it be? She is second to none in singing in my opinion.