It was already 11 o’clock in the evening       they arrived at the hotel.

       studying abroad can be hard, it can broaden your understanding of the word.

The problem wasn’t       hard. The little girl worked it out quickly.

An earthquake happened in Haiti on Jan.12,2010,       many countries in the world paid close attention to.

It’s an agreement between towns or cities, _______ have similar features, such as industry, culture and entertainment.

—He is eager to try something he has never tried before.
—Oh, I see. That’s _______ he’s different from others.

Afternoon tea was introduced in England by Anna, the 7th Duchess of Bedford, in the year 1840, _____ the evening meal was served fashionably late at 8 o’clock, thus _____ a long period of time between lunch and dinner.  

Many young people in the West are expected to leave ______ could be life’s most important decision --- marriage---almost entirely up to luck. 

Some people skip meals or eat only tiny amounts of food and may have conditions ______ rob the body of the nutrients ______ needs to grow and stay healthy. 

In the past few years, research has suggested that Vitamin D may increase the level of serotonin（血清素）, one of the key nurotransmitters influencing our mood, and ________it helps to relieve mood disorders.