问题
选择题
Ladies and gentlemen, please fasten your seat belts. The plane _____.
A．takes off
B．has taken off
C．took off
D．is taking off.
答案
答案：D
考查时态。句意:先生们，女士们，请系好安全带。飞机就要起飞了。Take off是表位置转移的词，经常用现在进行时表将来。所以选D。
搜题请搜索小程序“爱下问搜题”