Some of the students are not sure ___ spelling the word, while others are not sure ___ the use of some grammatical rules.
—Excuse me, sir, ________ —I’d like a cup of coffee and two pieces of bread.
_______ is known to all, the 2008 Olympic Games were held in Beijing.
I have lost one of my gloves. I ______ it somewhere.
John, look at the time. ____ you play the piano at such a late hour?
— What’s the name? — Khulaifi. _____ I spell that for you?