问题

ing to the regulation of Education Ministry, a full-time middle school or primary school _______ hold a flag-raising ceremony once a week, except during vacations.

A:shall
B:should
C:need
D:can;

正确答案是：

同类题型

Only when I made it to the train station _______ that I had left my ticket at home.

__ on ten years of observation and study, Professor Wang announced that everyone dreams every night，whether they realize it or not.

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Little ______ when 1 took the trip where it would lead me.

is known to us all is that the 2008 Olympic Games will take place in Beijing.