Half of the workers here ________ under 30 ________.

E－mail,as well as telephones,　　an important part in daily communication.

Tina used to __________a round face. 

Such poets as Shakespeare _____ widely read, of whose works, however, some _____ difficult to understand.

He said that what Mary had bought from the supermarket that morning ________ only a     few potatoes, eggs and salt, but I don’t think what he said ________ true.