当转弯灯电门在“ON”位，何时转弯灯亮

The news  （）    Lincoln was murdered filled the American people＇s hearts with deep sorrow.

We were all very worried over the fact  （）           you were ill.

Do you doubt        （）            I believe you ?

  （）      cleans the blackboard is to be praised.

Please put the magazines   （）           .

The question is             （）  the film is worth seeing.

You talk as if you   （）      there.

If I had known that, I     （）    so.

The foreign tourists have visited many scenic spots in Shanghai,
  （）    as interpreter

Once（）       at the shop, you will be dismissed immediately.