Question

Заполните пропуски предлогами и наречиями, где необходимо.
To achieve ___ the level ____ knowledge; to solve ___ the problem; is becoming ___ great importance; to attach importance ___ the problems; to cause ___ changes ___ the environment; the sharp increase ___ water pollution; cases ___ sickness are caused ___ the lack ___ clean water.

Answer 1

1. -, of
2. -
3.of
4. to
5. of, in
6. -
7. of, of , of