问题
What does the sign over there say?— No person ______ enter the area without the official permission.
A:shall
B:may
C:must
D:will
B:may
C:must
D:will
正确答案是：
同类题型
In face of the challenge for the moment, it’s most important to ______ a good state of health.
the economic crisis came, John had sensed that the firm was to be ruined and he_____ just in time
We were angry him for keeping us waiting
We should know that we can only reach the top if we are ready to ________ and learn from failure.