Relative Cl.

Here are some questions;

There is no disagreement among either the senior students or the junior ones, ...

a) which was reached after several meetings among their leaders
b) all of whom groups have decided to boycott the the end of term party

Isn't there sth wrong with b?

The skeleton of an astronaut ... stays in weightlessness for extensive periods of times becomes dangerously fragile.

a) who b) of whom c) whom d) whose e)which

Each of our english classes were based on a discussion ... we got to practice and improve our language skills.


a) why b) that c) about which d) whom e) where

Thank you.
C.