Write the verbs in the present perfect simple.

i (1) (work) a lot, and i (2) (save) a lot of money.i (3) (be) very lucky and successful,so i (4) (give) a lot of money to charity.my wife and i raise money for feed the children every year.it is a charity that (5) (do) a lot for poor children all around the world. (6) (you ever help) a charity? next week, there is a marathon in my city.the city (7) (not have) a marathon before,so everyone is very excited.i (8) (enter) and i (9) (ask) all my friends to enter,too. (10) (anyone tell) you about this event? you can read about it on the website runforcharity.com.someone (11) (put) a message about it on there.if you (12) (not do) your bit for charity, now is the time!

1. A computer is a device for treating information.

2. Methods of processing raw materials are wide and various.

3. Various types of machinery are used for performing unit operations at the

processing plants.

4. Pasteurization is the process of destroying bacteria and preventing milk from souring.

5. Butter is a dairy product made by churning the cream.

6. Condensed milk is often treated by adding sugar.

7. The high-class mixer is designed for mixing any kind of dough for mass production.

8. After having been churned the butter mass is colored if necessary.

9. After pasteurization, the milk may be homogenized by placing it in a highpressure pump machine.

10. Vegetables and fruit are usually preserved by canning and freezing, drying, etc.

1 a) I can’t afford that dress. I have spent all my money.
1 b) We have been spending too much money recently - we should save more.
2 a) Americans have been having Thanksgiving dinners for hundreds of years.
2 b) I’m not hungry. I have had my dinner.
3 a) Look at the time! We have been talking for hours!
3 b) I don’t know Tom well, but we have talked on the phone once or twice.
4 a) Ben and Sharon have gone out a few times, but they didn't get on very well.
4 b) Shane and Karen have been going out since the summer and are really in love.