She was melancholic, but he, in ____, rarely looked sad.
turn / contrast
15
The two twins are identical. It's impossible to tell ..... from the other.
one
15
The proton has a similar mass to ...... of a neutron.
that
15
She is regarded as a/an ...... citizen in the local community, which is why she has been nominated for 'person of the year'.
a) smooth-talking b) upstanding c) shifty d) deceptive
