A．They didn’t want the author to be embarrassed.
B．They were anxious not to arouse fierce argument.
C．They became very worried about his safety.
D．They were interrupted by the doorbell ring.

A．many countries in East Asia are politically hostile to Japan
B．few countries in this region could match Japan in export
C．the governments are not aware of the necessity
D．there is no agreement on the elimination of trade barriers