1.by this time tomorrow i for three hours. a)will fly b)will be flying c)will have fly d)will have been flying 2.the man looked so miserable that she burst a)laughing b)laughter c)crying d)tears 3.dave since he eft three days ago a) didn't see b) wacn't being seen c) hasn't seen d) hasn't been seen 4.she could't help when she saw his haircut a)laught b)laughing c)laughed d)to laugh 5. about when i entered the office? a)were you talking b) did you talk c) you talked d) had you talk 6.she tv since this morning a)watches b)was watching c)watched d)has been watching 7. his own. a)wasn't used to living b) didn't used to living c) wasn't used to live d) wouldn't used to live 8. his repaired at the moment a) is being b) was c) is d) will be 9. if study, you may fail the exam. a) don't b)hadn't c)doesn't d)weren't 10. there isn' left in the cup. a) many b) any c) no d) few

1. D
2. C
3. D
4. D
5. B
6. D
7. D
8. A
9. A
10. A

Computers offer wonderful opportunities for everybody. Many teenagers enjoy using their computers. They make new friends and chat with them on the Internet.  

But on the other hand, children who spend a lot of time at the computer, spend little time in the open air, they have virtually no real communication with peers. Many teachers in schools note the limited knowledge of children, lack of interest in reading books. Children sit in front of their PC or laptop (notebook) for hours and it’s bad for their eyes! They can’t stop playing cruel and silly games and become nervous and tired. The computer is sometimes a mere waste of time. Parents are concerned that the children using the Internet are not protected from negative information, which can be found on many sites. Computers are dangerous and addictive.

But besides many disadvantages in using the computer by children, there are of course some advantages too.

Regarding the education of children on the Internet children can find all the necessary information that is not given even in the textbooks. The main condition - to be able to properly use the Internet resources, then the child will only benefit from the computer. Then the Internet helps greatly in children’s studies. They find the necessary information and ideas on the net and use them in their work. The computer helps you both to relax and to get a lot of new interesting information.       To my mind it’s a useful gadget.

Ordinary fox - one of the most famous inmates of our forests . With a modest size , it still is a close cousin of the wolf and has a no less predatory disposition. So, what kind of animal red fox : a description of the animal, its habits , nutrition and economic value are set out below .Appearance FoxAll canines have total contrast - pointy ears and snout, thin legs , nevtyazhnye claws and a bushy tail . Fox tail is also used as a " blanket" , covering their nose and front legs during sleep in the winter .Generally red fox - an animal of medium size with a long, very beautiful tail and large pointed ears . Breast foxes white, body length of 60-90 cm, 50-60 cm tail ears on the back side is black and white tail tip , and there are black spots on the legs. Color red , sometimes with a dark cross on his shoulders.Color and size of foxes differ in varying terrain. In total there are 40-50 subspecies , there are also smaller forms . In general , as you move north foxes are bigger and brighter on the south - are smaller and dimmer. But this is the most common color: bright red back , white belly , dark paws . Foxes often have brown stripes on the blades and spine , similar to the cross.Molting foxes begins in the spring - in February-March and ends in late summer. After this, she immediately starts to grow thick winter fur , which the animal is fully clothed in November or early December . During this period, she is the most red, animal similar colors in our forests anymore. The summer fur is always more rare and short, and winter , on the contrary , more dense and lush.Distribution and behaviorRed fox lives everywhere except in the Arctic tundra and some islands . In areas with snowy winter she tries to avoid continuous taiga arrays.Fox , like most predators do not usually hunt near his lair.