1.
1 I don't remember these rules.
2 He doesn't know these words.
3 She doesn't often read books on economicsome.
4 He doesn't often write about such topics as good as and taxes.
5 They don't sometimes read The Economist, an English journal.
6 This company doesn't specialise in exports and imports.
7 We don't often speak about money, prices and inflation.
2.
1 Yes, he does.
2 Yes, they do.
3 I usually discuss the political problems with my friends.
4 I saw my best friend two weeks ago.
5 I will see him next Sunday.
3.
1 We won't discuss this topic next lesson.
2 He knows about these problems Russian economics.
3 Did she often take part in the discussions?
4 Will you discuss the question about different economic systems?
5 The main topic of our lecture is 'Employment ' today.
6 I didn't often meet this term in papers and magazines.