It was on the last day ______ a press conference was held by some committee members.

There is no need_____，because the flight has beencancelled

our driving license—No. I too busy to have enough practice, so I didn’t take the driving test last week.

(2013·高考福建卷)Mrs.Smith finds it hard to clear up the mess，as her children are always ________ whenever she tries to

The survey shows that ______ we are enjoying less and less good sleep, rates of heart diseases have risen rapidly