问题
选择题
All passengers______go through safety check before they take a plane.
A.can
B.may
C.must
D.ought
答案
答案:C
题目分析:can能,能够;may可以,可能;must必须,一定;Ought应该。句意:所有乘客在上飞机之前都要经过安检。故选C。
All passengers______go through safety check before they take a plane.
A.can
B.may
C.must
D.ought
答案:C
题目分析:can能,能够;may可以,可能;must必须,一定;Ought应该。句意:所有乘客在上飞机之前都要经过安检。故选C。