Fred is always ____ because he often does something good for his health outdoors．（ ）
A．weakB．nervousC．seriousD．energetic
Harry， you should mind your manners． It is to push in before others．
Sorry， Mum． I won't do it next time．（ ）
A．politeB．rudeC．activeD．careless
Bill， did you see Tom？
Yes， he just parked his car here and then hurried the street．（ ）
A．throughB．overC．pastD．across
Look! Somebody the lights．
Well， it wasn't me． I didn't do it．（ ）
A．turns offB．is turning off
C．was turning offD．has turned off
Have you heard about Zhangjiajie Glass Footbridge？
Of course， it's built over a canyon in the Zhangjiajie National Forest Park．（ ）
A．300﹣meter﹣deepB．300﹣meters﹣deep
C．300 meter deepD．300﹣meters deep
How amazing this robot is!
Wow， it has video cameras in its eyes， so it "see" and interact with people．（ ）
A．mayB．canC．mustD．should