N.1
1) a cup
2) a can
3) a packet
4) a jar
5) a box
N.2
1) any
2) many
3) any
4) a lot of
5) a little
6) much
N.3
1) away
2) off
3) back
4) chemist’s
5) out
N.4
1) has been
2) have been studying
3) i’ve known
4) has been cooking
5) i’ve been studying
6) have bought