Điền từ vào chỗ trống

1. They’ve bought a new ..................washer but it doesn’t seem to work.
2. The house was cold, so we had a new central .................. system installed.
3. We fight for .................. rights such as freedom of speech.
4. There was a(n) ..................-in at the office last night; the thieves stole some paintings and £5,000.
5. Mr. Edwards is in hospital. He had a heart .................. last night.