The Internet is really            to us. We can download a lot of things from it.

Though all of us hate Chinese style road crossing, there are still ______ people crossing the road when traffic lights are red in Yancheng. It must be changed. 

—What do you think of the lecture of Li Yang s Crazy English? —I think it's_________，but someone thinks it's much too _______.

We should keep ______ in the reading –room.

When you feel helpless and _______, just remember you are not _____ in the world because your friends are around you, including me.