He ____ in this factory for 20 years already.

What if I had parked my car here just now—What luck! You ______ .

The impact of a teacher ___the life of the students should be ____ enough attention to.

The film showed us ______ life was like in Beijing in the past.

Mum, it is nice weather.I want to skate this afternoon.— Don’t you think the ice on the lake is too thin to__________your weight?[ ]