We live day by day, but in the great things, the time of days and weeks ____ so small that a day is unimportant.

We like learning French, _____ we may never go to France[ ]

With the plane 　　　　in ten minutes, all the passengers on board were asked to turn off their mobile phones.

You should try _______down and take a rest.

Is that the reason ______ at the meeting for his carelessness in his work? Actually we think he is a man whois hard ______ himself especially in work[ ]