Question

Очень прошу помощи....Read the sentences below.
Circle the relative pronouns and
underline the relative clauses.
Then put brackets around the
pronouns which are not necessary.
Example 1 I loved the museum
(that) we visited yesterday1 I loved the museum that we visited
yesterday.
2 He was a painter whose works
were sold for over $10,000 each.
3 The painter who you were talking
to sells his paintings to the best
galleries in Paris.
4 The opera that we saw was terribly
boring.
5 I think the architects who design
new buildings in Warsaw are too
conservative.
6 Have you bought the CD which I
was telling you about?
7 The place where we met is the
oldest in town.

Answer 1

2 нельзя убрать (только есть перефразировать)
3 who
4 that
5 нельзя убрать 
6 which
7 where