6. ................smoke. It’s not good for your health. A. Let not B. Do C. Don’t D. Can’t 7. “I’ve just passed the final exams.” - “.....................” A. Really B. Thank you C. Congratulations D. Welcome 8. He looks very tired. He stayed ............... late to see a film on TV last night. A. up B. on C. in D. for 9. I don’t agree ........... the idea that there will be underwater or underground cities in Vietnam in the future. A. without B. with C. about D. on 10. Look! There’s a lot of grey cloud in the sky. It .............. rain this afternoon. A. might not B. cannot C. will not D. might