Since production has risen ________, the personal income has increased year by year.

Though it was in the midnight, ________ there were a lot of people in the street.

 I can't believe what he says because he is _______ changing his mind. .

Professor Lee failed many times but he ________found a good way to solve the problem.

 Young children seem to master computer games __________. And playing computer games will always make them feel ___________.

 When you feel you are happier and more relaxed after having a cigarette, you may become ________addicted.

 After two years’ study, he now has a __________ better command of English.

Everything was placed _______ where he wanted it for the party, with which he was very satisfied.

 --- You've finally figured out the puzzle！--- Yeah, in a complex way, _______.

 No one responded when Tom was speaking, so he paused _______ before continuing to draw our attention.

 ----Volunteering is becoming ______ popular in China. ---- Yeah. People are now aware that helping others is helping themselves.

Although the new road is being used, it has not yet been _______opened.

We could hardly believe what she says because she is ________ changing her mind. 

It’s always difficult to live in a foreign country, ______ when you don’t speak the language. 

 Jim went to answer the phone. _________ , Harry started to prepare lunch.

 They have earned lots of money, so I______ believe that the business is a success. 

 ----He thinks that girls are smarter than boys when it comes to learning English. ----But two years ago he thought_______.

For passengers traveling into the city, taxis and car services charge ________ 50 dollars.

 Just as a book is often judged ______ by the quality and appearance of its cover, a person is judged immediately by his appearance.

The mother looked at the door _______，expecting the children’s coming．