1.   What he would have done with it had not other events intruded is problematical.

2.   Current events intruded on the futuristic excitement last week in Washington, where chip researchers held their most important annual gathering, the International Electron Devices Meeting.

3.   Events on land intrude.

4.   Global events rarely intrude on a college basketball season, but this one started out with Pearl Harbor.

5.   Meanwhile, outside events intrude and lead to a harsh, though strangely just climax.