Not having made adequate preparations, they thought it better to______the excursion till next week.

Users must never give their password to ______over the ...

单项选择题Users must never give their password to ______over the computer network, no matter how official the request appears.

As the number of participants is confirmed______the sch...

单项选择题As the number of participants is confirmed______the schedule is set, the marketing division will design a poster for the conference.