Jack，please help me the picture on the wall.

Nowadays many people set up their own Blogs on the Internet, _______ they can express themselves freely or communicate with others.

Could you please _____ in the room? –Oh, I’m sorry.

Shall we go to visit Mr. Wang now?—Mr. Wang________here now. He left for Shanghai by air this morning.

The light in his room is still on. Do you know _________?— To prepare for the coming exam, I think.