Ex.1. Заполните пропуски следующими предлогами: because of, of, for. in. with 1. Metals are ... great importance ... our life ... their useful properties. 2. They are widely used ... industrial purposes. 3. There are two large groups ... metals: simple metals and alloys. 4. Alloys consist... a simple metal combined ... some other elements. 5. Almost all the metals are found ... the earth's crust... the form... ores.

Ответ: 1. of, to, for. 2. for. 3. of. 4. of, with. 5. in, in.

1. 1. Metals are ... great importance ... our life ... their useful properties.

   • Metals are of great importance to our life for their useful properties.
   • Металлы имеют большое значение для нашей жизни благодаря своим полезным свойствам.

2. 2. They are widely used ... industrial purposes.

   • They are widely used for industrial purposes.
   • Они широко используются в промышленных целях.

3. 3. There are two large groups ... metals: simple metals and alloys.

   • There are two large groups of metals: simple metals and alloys.
   • Существуют две большие группы металлов: простые металлы и сплавы.

4. 4. Alloys consist... a simple metal combined ... some other elements.

   • Alloys consist of a simple metal combined with some other elements.
   • Сплавы состоят из простого металла в сочетании с некоторыми другими элементами.

5. 5. Almost all the metals are found ... the earth's crust... the form... ores.

   • Almost all the metals are found in the earth's crust in the form of ores.
   • Почти все металлы находятся в земной коре в виде руд.

Ответ: 1. of, to, for. 2. for. 3. of. 4. of, with. 5. in, in.