The boy has a ________ sense of direction and never gets lost in the forest. [ ]

The water supply has been cut off temporarily because the workers________one of the main pipes (2013·天津，13)

It is sometimes difficult for a newly established corporation to ______ the changing demands of the market.

It is fairly common in Africa foragroup of musicians surrounded by others who also join in the performances

.Can you still remember the days_________we spent together in Chongqing last summer?