单项选择题
Not having made adequate preparations, they thought it ...
单项选择题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.
