1on saturdays, kairat?
a do you work b are you working
c does he work​

1) was, were

2) was

3) is

4) were

5) are

во всех позициях грамматически можно использовать и отрицательную форму. 

первое и второе потомушто из телевизора можно увидеть новости и всё токое а в компютере тоже короче 1 и 2ю

1.should all library eguipment and books  be used carefully? what should be used carefully?

  2.should conversation  be kept to a minimum and as guiet possible? how should  conversation be kept? .

  3.should personal stereos  be used in the library? what should not be used in the library?  

  4.should mobile phones  be turned off before readers enter the library? when should mobile phones be turned off?

  5. is  food or drink  allowed? what is  not allowed?

  6.should all borrowed books  be brought back by the due date? what books should be btought back?

  6. should fines for the late return of the books  be paid? why should fines be paid?

  7.should all books  be shown to the librarians before you leave the library? whom and when should all books be shown  ?    

8.should everybody  be treated  very politely? how should everybody be treated?

is there anybody among your friends who likes to boast?

what do you think the best thing about being a celebrity is?

what is a precious stone?

have you ever felt lonely living on your own?

do you own this car?

who is the owner of this country house?

is this film worth watching?

why do you ask me such absurd questions?

where did you manage to find this valuable information?