1. The more careful you are,              _______ (few) mistakes you may make.
2. Her husband was not as _______ (friend) to them as her parents.
3. Maths is one of                                 ______ (important) subjects.
4. If you want to keep fit, you’d better eat more vegetables and ______ (little) meat.
5. The population of Tianjin is _______ (small) than that of Beijing.