Some of the students are not sure ___ spelling the word, while others are not sure ___ the use of some grammatical rules.
—Have you heard the story of “The Merchant of Venice”? —No. When and where does the story ______ ?
Filled with anger, he didn’t shout or swear, but just ________ silently at me.
— You seem to be interested in writing. — What? _______, I’m getting tired of it.
He sat at the desk, __________ a novel.
—Excuse me, sir, ________ —I’d like a cup of coffee and two pieces of bread.