Выделить сказуемое и определить его временную форму.1. his last book has just been published. 2. i was reading the economist, while my sister was watching bbc. 3. the students have just written a test. 4. i shall not be allowed to go there. 5. by three o’clock everything had been prepared.

1) has been published (Present Perfect, Passive Voice) 
2) was reading, was watching (Past Continuous) 
3) have written (Present Perfect)
4) shall not be allowed (Future Simple, Passive Voice)
5) had been prepared (Past Perfect, Passive Voice)