It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any ________.

Your as a student will be excellent if you develop a habit of reflecting on how you learn.

Nowadays senior high students are burdened with too many        ，which is making them less and less confident.

Whatever he does, once he sets up a goal, he would start pursuing it without _______.

You were working too hard. You’d better keep a ________between work and relaxation.

Please give the ticket to ___ you think is the most suitable in my office.

That little boy can pick up a tune immediately on the violin; he really has a _____for music. 

Jade is the highest award in Chinese culture and medals are the most important prize in Olympics, so medals with jade is the perfect _________ to present the Olympics in Beijing.

There is an obvious _________ between the cultures of the west and East.

My mother is the type of woman who suspects that a late night call or a surprise invitation is a ________ of bad news.