My brother Joe never learned to swim，nor does he intend to start now．

The lady talked about Africa for the next 45 minutes, never ____ Carnegie again about where he had been or what he had seen.

In Ping-pong diplomacy, American Ping-pong team visited Beijing in_________(which year), paving the way for President Nixon’s officially visit to China in_________(which year).

Ben is fully aware that if not properly managed，his shirt factory will have to close down in less than a year．

Paul could not dance，nor could he sing．