As a teacher , you patient .
— I visited the Purple Mountain Observatory last Sunday.— Why didn’t you tell me earlier?
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.