问题补充:
Ladies and gentlemen, please fasten your seat belt. The plane .
A. takes off
B. is taking off
C. has taken off
D. took off
答案:
A. takes off
(答案→)B. is taking off
C. has taken off
D. took off
解析:根据句意可知句子叙述的是正在发生的事情,故用现在进行时,选B,飞机正在起飞。
时间:2020-08-03 15:38:54
Ladies and gentlemen, please fasten your seat belt. The plane .
A. takes off
B. is taking off
C. has taken off
D. took off
A. takes off
(答案→)B. is taking off
C. has taken off
D. took off
解析:根据句意可知句子叙述的是正在发生的事情,故用现在进行时,选B,飞机正在起飞。