Choose the correct alternative. in one sentence, both alternatives are correct. which one? 1 when he was small, he used to/would be really shy.2 i used to study/studied in ireland for two months.3 i use to/usually go to the cinema at the weekend.4 last year my brother had/used to have a big partyto welcome his american friend.5 did you use/used to have a pet? 6 children used to/would work in factories in britainin the 19th century.7 they didn't use to/wouldn't go out on fridayevenings, but now they do.​

1.used to

2.study

3.usually

4.used

5.used

6.used to

7 didn't use to

Объяснение:

1. To
2. Study
3. Usually
4. Used to have
5. Use
6. Used to
7. Didn’t use to

1 Network worm hasn't struck 6.200 machines that formed 7.3 % computers to network.

Has network worm struck 6.200 machines that formed 7.3 % computers to network?

2 This virus isn't spreading very quickly over the Milnet.

Is this virus spreading very quickly over the Milnet?

3 Well over 50 sites haven't been hit.

Have well over 50 sites been hit?

4 Most of these aren't "major" sites and gateways.

Are most of these major" sites and gateways?

5 This utility can't send a message into another program.

Can this utility send a message into another program?

6 FBI hasn't imposed a prohibition on all materials relating to the Morris virus.

Has FBI imposed a prohibition on all materials relating to the Morris virus?

7 Morris wouldn't have been sentences to 5 years of prison and 250.000 $ of fine.

Would Morris have been sentences to 5 years of prison and 250.000 $ of fine?

8 The author didn't had to take part in the liquidation of its own creation.

Did the author had to take part in the liquidation of its own creation?

9 They don't have to fight for survival in complex conditions of conflicting computer systems.

Do they have to fight for survival in complex conditions of conflicting computer systems?

10 Are destructive actions an integral part of the virus by default?

Объяснение:

10 уже в задании написано в отрицательной форме.

1) The main idea of the article is without money or federal support scientist cannot create a breakthrough product. The big part of money spend on disease research.

2) The intention of writer is that federal initiatives should be used correctly. Money don't need to spend on disease research instead of research function of the cell.

3) Smartphone features, such as GPS, touchscreens, speech recognition, LED lighting.

4) I agree with the writer, we need to look at the root of the problem, not solve its consequences, we need to explore the galaxy, the oceans. This will give answers to many questions.

5) The human brain, the seas and oceans, the galaxy are not fully understood, so we do not know much, it is a mystery to us.