Task 1.
1. He’s an excellent manager, so there’s very LITTLE tension in the office.
2. I can’t decide now. I need A LITTLE time to think it over.
3. I can’t talk to you now — I have got A FEW things to do.
Task 2.
1. I couldn’t make an omelette because there were NO eggs.
2. He said that SOME of the people we invited to the party were able to come.
3. We couldn't buy anything because NONE of the shops were open.
4. NO cars are allowed in the city centre, but you can take ANY bus there.