—It’s important for students to obey traffic rules.—Sure. Teachers always warn us ________ on the road because it’s very dangerous.
TV and computer can our eyes to the outside world.
--- How was your day off? --- Pretty good! I ______ the science museum with my classmates.
______ is too difficult in the world if you put your heart into it.
--- What time is it by your watch? ---It ______ 2:00 pm.
Tom didn’t get ready for his speech, so he was very ______ when he stood in front of class.