--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.

—Isn’t Ann’s husband over there? —No, it _____ be him — I’m sure he doesn’t wear glasses.

We should spend as much time as we _______ over our lessons.

—I think her dress comes from the 1970s.—It_________ be from that time. It looks so modern on her.

— I’m a little tired. Let’s go to the zoo by taxi.  —We ________take a taxi. It’s not far from here.