Now people can with their friends far away by e–mail, cellphone or letter.A. keep on B. keep in touch C. keep up
The boy is ________ to greet us every morning .
--How long has Robert _______? ---Since 2000.
What do you usually use your computer _________ ?
Would you mind ___________ me how to start this online tour ?
Mr Wang isn’t here , I think he __________ Shanghai .