on’tknow ____­­­­­­­­­­­_ to take up Miss Rose’scourse because of her wedding leave, I have to ask her students about it .

The high-speed railway linking Zhengzhou in Henan province to the western city of Xi’an in Shanxi province, started __________ January 17, 2010.

Most people usually have less money at the end of the month than ____at the beginning.

33Is it the letter you got yesterday ________ makes you so sad?

I don’t like the way ________ he congratulated us ________ getting married.[ ]