— Can I pay the bill by check? — Sorry, sir. But it's the management rules of our hotel that payment ______be made in cash.
A survey was carried out on the sleep time of students in middle schools, ______ were surprising.
---Do you have ______ for the party, Mary? ---No, we still have to get another five chairs and some fresh flowers.
Was it in 1969______ the American astronaut succeeded ______ landing on the moon?
---What do you remember Alexander Graham Bell as? --- ______ inventor of ______ telephone.
---I hear that Mary won the prize of the biology contest. ---______ She was not interested in it at all.