---Excuse me, sir, is this seat taken?---_______.
The little child ________ go out alone at night, so he ________ walk in the dark that night.
—Did Ann fail in English? —She ________.Don't you notice that she looks depressed?
Look! There are so many mistakes in your composition. You ________ have fixed full attention on it.
Days later, I tried to get my sister to tell me what was going on, but she ________ say anything.
—Can I pay the bill by check? —Sorry, Sir. According to the rules of our hotel, the payment ________ be made in cash.