.
In those days, the old woman __________ sit at the door for hours, waiting for her son to return from abroad.
| A．should | B．used to | C．might | D．would |
The hotel turned us down because we didn’t make reservations, but we ______ have.
| A．might | B．can | C．must | D．should |
Home-working opportunities and ______ working hours are top concerns for the working mothers.
| A．accessible | B．reliable | C．changeable | D．flexible |
Personal relationships ______ over years may be lost when we move houses.
| A．building up | B．built up | C．having built up | D．to be built up |
Someone in the crowd called out his name, but he couldn’t see ______.
| A．whose | B．who | C．where | D．which |
Sales of their new video has ______ one million dollars this year.
| A．got over | B．set up | C．brought about | D．broken through |