задать воросы к каждому предложению : другой,особый и к подлежащему. 1)

1) The journal examines three systems.

Does the journal examine three or five systems?

What does the journal examine?

Who  examines three systems?

2) The students read a lot of litereture.

Do the students read a lot of litereture or magazines?

What do the students read?

Who reads a lot of litereture?

3) Dr.B analyzed any complex prolems.

Did Dr.B analyze any complex prolems?

What did Dr.B analyze?

Who analyzed any complex prolems?