---I think Miss Gao must be in the library. She said she would go there. ---No, she ___________ be there. I have just been there.
We are happy ______ our success.
Most students have ______ homework to do every day.
Now telephones are very popular and they are much ______ than before.
– How much does it cost? – Four ______ yuan.
Ricky was ill yesterday, ______ he had to stay at home.