---It’s very important _____ us to make plans before a new term. ---Yes. You must try to make it carefully.
It’s 8 o’clock. The students _________ an English class.
--- Don’t run in the hallways. --- ______, I won’t do it again.
In South Korea, most students get to school ________.
It takes ________ half an hour ________ on foot.
We usually play sports _______three hours every day.