6. They couldn’t go on a picnic ................the weather was bad. A. because B. when C. but D. or 7……………eat too much salt. It’s not good for your health. A. Don’t B. Do C. Can’t D. Please 8. …………….the film is late, Mai will wait to watch it. A. When B. But C. Because D. Although 9.………..the air is cleaner, people will have less breathing problems. A. Because B. When C. Unless D. If 10. That is ………..novel I’ve ever read. A. the borest B. the most boring C. the boring D. the most bored