Shenzhou-VIII has docked with Tiangong-I successfully, ________ the start of the establishment of China’s own space station．

The price system is a complex network _______ the prices of all the products bought and sold in the economy as well as those of a great number of services.

________to work overtime that evening, I missed a wonderful film.

________ very confused，the little girl looked up the information in the book to find out the answer．

Apple has given in to intense pressure from Chinese state media about its customer service practices, ________  to consumers in its second-largest market.

The oceans and seas ______ the islands are more or less polluted.

_______to sunlight for too much time will do harm to one’s skin.

Cao Cao’s tomb is reported ________ in China, which attracts nationwide attention.

-----What do you think of the book I lent to you yesterday ?
------Oh, not too bad.It’s not too difficult_______.
A  reading  B.to be read   C.to read   D.being read

________ many times，I still didn't know how to operate the machine.