Ladies and gentlemen, please fasten your
题型:选择题
问题:
Ladies and gentlemen, please fasten your seat belts. The plane _____. |
A. takes off B. is taking off C. has taken off D. took off |
Ladies and gentlemen, please fasten your seat belts. The plane _____. |
A. takes off B. is taking off C. has taken off D. took off |