2. The classrooms _________ every day. (sweep) * Đây là một câu hỏi bắt buộc 3. Is it easy ________ him at this time of the day? (meet) * 4. My house ________every year to welcome the Tet holiday. (paint) * 5. Your letter should _________ in English. (write) * 6. It’s difficult ________ the busy street during the rush hours. (cross) * 7. It’s very dangerous________ fast in a crowded city. (drive) * 8. Her report must________to the head office tomorrow. (send) * 9. We _________ the train if we don’t hurry. (“not, catch”) * 10. Milk_______to my house by the milkman yesterday. (bring)