--Life ____   be very hard for people living in the north of Canada as it is very cold there in winter.—Yes, the weather there _____   be as low as 60℃ below zero.

For the safety, everyone _________ obey the traffic rules when he is driving or walking.

Alex changed his mind at the last minute，otherwise we ________ an agreement.

---May we go home mow ? --- No, you____. You____ to go home until 5 o’clock.

You may get lost easily in big cities like Beijing        you have a map or a guide.