–I could not start my car this morning due to the cold weather.--No wonder you were late. You ___ have used mine. I was not using all the morning.
Large quantities of water , as well as some other timely help including a medical team, _____ since the serious drought hit Yunnan Province.
—How did it _____ that you made such a silly mistake? —I myself haven’t figured it out yet.
The company has launched several types of cars this year, and one_______ appeals to the young.
It is _______ of the students to stay up reading till late night before the final exam.
Considering the advantages of the method, they decided to it.