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21. --- Morning, class! Good luck to all of you in the exam!
--- Morning, teacher. ________.
A. The same to you. B. You, too.
C. Thank you. D. I’m sorry I can’t.
22. --- I don’t think teenagers should drive cars.
--- _______. They aren’t serious enough.
A. I agree B. I don’t agree C. I think D. I don’t think
23. ---If there are ______ people driving , there will be ______ air pollution.
21. --- Morning, class! Good luck to all of you in the exam!
--- Morning, teacher. ________.
A. The same to you. B. You, too.
C. Thank you. D. I’m sorry I can’t.
22. --- I don’t think teenagers should drive cars.
--- _______. They aren’t serious enough.
A. I agree B. I don’t agree C. I think D. I don’t think
23. ---If there are ______ people driving , there will be ______ air pollution.