3. Why didn’t you come and see our performance? Oh, I _____ busy with my homework. A. was B. am C. will be D. shall be 4. Remember to turn off the lights before you _________. A. will leave B. will be leaving C. leave D. are leaving 5. We often _________ our national costumes at the ceremony. A. hold B. parade C. wear D. turn 6. This time next week, I _________ my literature exam. A.am taking B. will take C. have taken D. will be taking 7. If it rains tomorrow, she _________. A. won’t come B. doesn’t come C. not coming D. hasn’t come 8. _________ please be quiet? I’m trying to finish my homework. A. Are you B. Will you C. Should you D. Mind you 9. Those artists are adorable. They danced _________ and with great passion. A. beauty B. beautiful C. beautifully D. most beautiful 10. Low energy light bulbs should be used to _________ electricity. A. spend B. buy C. convert D. save 11. All the house in our village will be _________ by solar energy. A. heated B. heightened C. frozen D. widened