—Are these books? —No, they aren’t. They are______.
【2012四川达州】—What ____cold weather!—Yes. But it’s _____unusual experience for us, we normally live in a hot place.
–People can’t live without _________________ water.---Yes, I think so.
【2013滨州】 man in a black hat is my PE teacher. He often plays football with us.
【2013丽水】It is a good habit to go to ______ bed early and get up early.
【2013杭州】I think it’s really ______ hard work for me to finish the job in twenty minutes.