In the dark forests _________, some large enough to hold several English towns.

— Why can’t I smoke here?— At no time ____ in the meeting room.

In no city of China _____ little about the economic development．

While ________ the dog, you should take care not to ________. Otherwise, it may be dangerous to strangers.

Officials from China and France formally promised on Thursday to build a new type of economic partnership, while ________ business cooperation.