They couldn’t stand like that.
——We can never forget the days _______ the two astronauts in spaceship worked together and the days ________ we spent together.
The house we used to live has been rebuilt.
In an experiment, pet owners are being encouraged to take their pets to work, a move _______ can be good for both the people and the pets.
By nine o'clock, all the Olympic torch bearers had reached the top of Mount Qomolangma, ___________ appeared a rare rainbow soon.
Is this the restaurant ___________ ?