Complete these sentences using the verbs in brackets in passive. 
1) A global system of interconnected computer networks (to call) the internet.
2) The modern idea of radio (to develop) by many individuals- inventors, engineers, businessmen of the previous centuries.

1) A global system of interconnected computer networks (is called) the internet. 2) The modern idea of radio (was developed) by many individuals- inventors, engineers, businessmen of the previous centuries.