Continue to undertake before and after studies at treated sites.

A thorough study of the plant had not been undertaken until the time shortly before the species' publication.

Peckinpah's last work as a filmmaker was undertaken just two months before his death.

Only two operations were undertaken by the squadron before the Japanese surrender.

"What would be your recommendations for undertaking the task before us, Ahk?"

Pearl predicted that fieldwork would be undertaken before 1976, but in fact no one had yet done it.

An apron extension was not undertaken until just before the performances, to keep it a surprise.

No equivalent to which was undertaken before January's new energy policy was announced.

Required the mitigation of fish and wildlife losses to be undertaken before construction on the project involved begins.

The three men undertook some excursions in Egypt together before parting company.