In this workshop, the output of July was three times           of January.

---What's the difference between the first house and the second ? ---The first house has a garage while the second has _____.

 In the west, people make _______ a rule to send Christmas present to their relatives and friends.

Mr. Alcott, headmaster of the school, refused to accept made by the Students’ Union.

The conflict between Gadhafi’s government army and the rebels in Libya made ______ difficult for the foreigners to leave the country.