—What on earth made Susan weep?—________ of cheating in the exam.
He reached the station _____ only _____ that the train had just left.
——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.