--Listen! Someone is knocking at the door. Who _____it be?---It_____be Tom. He phoned to visit me this evening.
There’s milk in the fridge. Let’s go to buy some .
Is the computer ? We don’t have to buy it .
—Excuse me! You can’t take photos here.Look at the sign. It says “NO PHOTOS”. — Sorry,I _________ see it and I _______ do it.
— Summer holiday is coming ! _______ will you go to Hainan for a trip ? — In a few weeks.
Look! There are people in the supermarket.