Boys, don’t lose____ in playing Angry Birds. It is bad for your eyes to play computer games for a long time.

There will be _____ people and ____ pollution in the future .

I went to see you yesterday evening. But you weren’t in. Where were you then？ —I_____ a walk by the lake with my husband．

What do the police think about the murder?— I’m not sure. But I want anyone who ______ the clue to contact the police actively.

Have you got;E-mail address?—Oh yes, mine is wjb80@yahoo. com,