Recently, employees at the Shanghai Metro’s Railway Station Stop have been busy learning dialects from other parts of the country, ___________ aims to provide better service to travelers from outside the city

There the irrigation canal ____the reservoir(水库)which is very important to the villagers.[ ]

No one in the department but Tom and I ______ that the director is going to resign.

_______ the boy was walking down the street, the UFO landed.

Though the old lady used ____ her dog for awalk after supper ,now she has become used ___ at home.