I. Choose the correct answer to fill in the blanks in the following sentences . 1. Alexander Graham Bell invented _________ telephone in 1876. A. / B. the C. a D. one 2. ________ earlier you come, _______ better place you can find. A. The, a B. /, a C. The, the D. /, the 3. Peter has been working as ______ editor for _____ magazine. A. /, a B. an, the C. the, a D. the, / 4. Many people are still in _____ habit of smoking in _____ public places. A. /, the B. the, the C. the, / D. a, / 5. _____ knowledge of English is a must in ______ international trade today. A. /, the B. The, the C. The, an D. A, /