The Minister of France stresses that the quality of goods , _______ the quantity of production , is the key to improving the nation’s economy .

I’m worn out,____,the bike doesn’t work well,___ I can’t go further.

We often say that something is “as light as air”, but air is＿＿＿light. 

—I heard Charlotte had been drowned in the lake.—Really！Her boat turned______,and ______she couldn’t swim.

____ the fire broke out, three fire-engines were rushed to the spot.