Was it by cutting down staff ____ are not diligent eough _ _she saved the firm? —– No, it was by improving work efficiency.

8. Usually passengers are required toarrive at _____ one hour before ______ takes off.

What’s the use of this kind of fuel(燃料) — It can make the train __________ fast.

uldsay she was kept very busy, ____ she meant to refuse his invitation to dinner

fforts, as reported, ______in the years ahead to accelerate the supply-side structural reform.